I agree with all of the above. My disagreement comes from your insistance that we must go through a period of sentence repetition before learning anything else or your bad pronunciation will fossilize and you’ll never pronounce correctly. This is, IMO, an example of the worst flaw of most language learning advice: overstating a point. I know you think you haven’t done that, because you value flexibility and so on, but in practice you have:
Your words, and that in a thread about grammar problems!! of all places, so much for flexibility! For all you know the OP may have the most perfect accent in the world because he only talks about his troubles with grammar, but you still go out of your way to explain how beginning with Lingq would be a terrible thing from which he’ll never recover. If that’s not an overstatement, I don’t know what is.
The problem with overstatements is that someone else will try this and discover it is not a good fit for them (even if it is for you) and that person will go on to totally overstate their point, in the name of the same principles you defend: avoiding bad habits and, hey, “I know someone who repeated Chinese sentences for years and never got to speak and they still can’t pronounce all that well” or something like that… So, that person says that you must never utter a single word until you understand the language well or you’ll never speak, and so on… Or someone else may talk about how so many people freeze out of fear of mispronouncing so they never learn, and. thus it’s better to speak however you want but at least not freeze and you must avoid sentence repetition like the plague…
Then someone sees the problem of this approach and goes back to case number one,…
I can find you examples of all those positions and the same goes for grammar, advice going from “having a solid understandig from the beginning” to “don’t learn any grammar or you’ll never progress” and that again, based on the same ideas of “avoiding bad habits” and anecdotal evidence of a friend of a friend who did whatever and never got to learn.
And all of that just because people insist on taking good points and overstating them to the point of absurdity.
Your main contention about being mindful of pronunciation from the beginning is sound (pun intended) advice but there are different ways to go about it and each has advantages and drawbacks. Pounding Pimsleur worked for you (and I’m glad it did) because:
a) You don’t mind repeating a lot of nonsensical sentences. Ok but it’ll bore most people to death. This is partly personality (I guess), partly confidence because you’ve learned other languages (this is huge to get you past this phase), partly money (you don’t mind paying an additional amount for a temporary resource) and, most important, partly because those sentences are not so nonsensical to you, afer all you already speak (at least) two closely related languages and have been exposed to some French words since childhood. Most learners are quite different: Try repeating Russian sentences composed of words whose syllables you can’t repeat even immediately after hearing them, for months on end until you get all the sounds right. Hey! and don’t even touch that Assimil before you sound like a native or you’ll never speak properly.
b) Because of the aforementioned pre-exposure and the fact that German pronunciation is not very different from the French one (except nasals, it has most “strange” phonemes, including u, eu, r, …), and there are even quite a few words in German that use nasal sounds (“Balance”, e.g.), you stand a solid chance of learning French pronunciation in a short time simply by repeating. This is not the case for most people, and this is the main failure of your argument. If an English/French speaker had to master the trilled R before learning Spanish, not many people would learn, whereas I’d be a billionaire if I got one cent for each foreign person who communicates well around here with less-than-perfect Rs. Another example: if you had to master all soft/hard consonant distinctions in Russian before beginning to learn you’d probably never learn (added to the difficulty of merely repeating words). How many Chinese words do you have to repeat before mastering the tones and their varitions? When I began learning French (decades ago, it was my first foreign language) I could not pronouce the “z” sound to save my life, not to mention the more difficult sounds (“an” vs “in” anyone?). I can swear that I can pronounce rather well now, even getting mistaken by a native on occasion. There was no Pimsleur available here then or anything remotely simillar, but my mistakes did not “fossilize”, whatever that means.
c) Because it is relatively easy for you to pronounce French (I know it doesn’t feel so but, trust me, it is), you haven’t even tried other pronunciation learning methods, which are in fact way more effective in many (not all) cases. Here “no size fits all” for sure, but a combination of careful listening and knowledge of how to move the articulators is my own favorite method. For French this video series is a great example of the latter: frenchsounds - YouTube
This method takes time and it’s much better pracising as you learn the language, not as a prerequisite. For me, this method is much better. Some people call it “hearing with your mouth”, it is based on the fact that learners often can pronounce phonemes much earlier than they can identify them in others.
However, and this is my main point, I will never go around saying that you must learn phonetics and articulator movement or else you’ll never learn and so on. That would be overstating my point. This is just a method that works for me. Maybe Pimsleur works for you and, again, I’m hapy for you. I’m sure it can help other people in a situation similar to yours. NO, it’s not a pre-requisite. No, it’s not a good fit for everyone.
Bottomline: YMMV