Yes. if you are using a tool like LingQ your progress will be very fast when it comes to developing vocabulary range. The more vocabulary words you know, the faster the language will be comprehensible for you. For example, try reading a physical book without lingQ. You look up the meaning of an unknown word by the time you are on page 4 or 5, you come across the same word again; you already forget the meaning. However, with LingQ you can look it up quickly by simply clicking on the word. You can also study individual sentences in a sentence mode if they are ambiguous (try this with a normal physical book it is not possible i.e intensive reading). Also, your already looked up words can be traced back in different text that shows whether you still remember them or not. It is like natural SRS built into reading. That is the purpose of creating LingQs.
In short, reading is more efficient via LingQ. You save a lot of precious time. Also, if corressponding audio is available you can make your listening more comprehensible to listen to by studying the text beforehand. Otherwise the same audio will be gibberish/noise to listen to.
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