What AI definitely is as an amplifier (in my interpretation of the article) is an amplifier of "laziness": students spending less time studying, getting by with the homework with the less possible effort, and finally achieving worse results. And the longer one uses AI for, the "lazier" they get (the more they rely on it for homework, and study less).
If it is an amplifier of "good" vs "bad", I don't know, and I do not know what that means exactly. I do not think some students are just "bad" or "lazy" by character and that explains all. I think that their environment has a big role in shaping their actions. I don't think that AI cannot be used beneficially (and the articles talks about some attempts that maybe worked well), but it requires careful considerations, guidance and intentionality from educational institutions themselves. The same goes with all kinds of technology, and AI is nothing new in that sense, but often new technologies are introduced in education without careful considerations or evidence based policies. Which is why imo articles like this are very important.