I'm unimpressed by the quote- none of what the writer is saying needs to be true. Listening doesn't need to be taught in designated listening classes, and just about all classes involve some degree of listening anyway.
When he says
One of the disadvantage of listening classes is that the teacher asks her students..., it is a generalisation that would be more accurate if it said
if/when the teacher and even then, it assumes that asking students to produce language is debilitating- this would depend on whether the language they are being askedto produce, their level and many other factors.
They don't necessarily have to answer questions and the concept of correctness would depend on the way the listening text is used and there's frequently no need or requirement or pressure to understand every word.
There are many factors at play with listening, as with all language, but this description is based on overgeneralising poor teaching into a one-size-fits-all critique that makes for a weak argument.
If you first asked every subtle word from your student, they would feel the work overload.
Quite probably, but I have never seen this done as an ESL listening exercise- transcription may be used in some specialised courses, but it's not a mainstream activity. Generally, they use cloze/gap fills and other things as ways to test comprehension, though some say that this sort of activity doesn't test comprehension.
There's nothing in the paragraph that is actually true- all of it may be found in some classrooms, but not a word of it needs to be the case. It's a description of poor teaching of listening and not listening classes themselves.