Chomsky does not abuse any people.
He shows some people the logical errors of their thinking.
Poverty of stimulus is pretty much what you say but that is just the title.
What Chomsky mainly does here is discuss the actual work of some people in the field of linguistics.
He reviews a paper and discusses the errors in the thinking contained within it.
The questioning at the end is impressive.
Oh, but you don't know Noam. I've attended a few of his lectures before and had brief interactions with him at wine&cheese receptions afterwards. He tends to be far more polite to non-linguists who ask naïve questions, because he doesn't feel threatened by them. He can be quite nasty with those who challenge him on more substantive grounds.
Here's an example of what I mean. Back in the 1980s, he was invited to debate his former student, Jerrold Katz (a linguistic philosopher), at Columbia University, where I was a member of the Linguistics faculty. I knew Jerry pretty well but Chomsky not very well. BTW, Chomsky was always pleasant to me on the few occasions that I talked to him. The debate topic was over whether Generative Linguistics was inherently platonist in its approach to language, with Jerry arguing (as he had done previously in print) that it was. That really steamed Chomsky, who sees himself as something of a cognitive psychologist. So, after Jerry gave the opening salvo, Chomsky got up and claimed that he was misrepresented. Jerry interrupted him (which had been SOP for Chomsky's first generation grad students) and called out that he was wrong. Chomsky denied it, so Jerry asked him to bet $5 on it, claiming that he would show him the passage. Chomsky accepted the bet, and continued his remarks. Jerry sat behind him furiously leafing through Chomsky's latest book. He then jumped up and approached Chomsky with his book. He pointed out the passage, and Chomsky shook his head. After the debate, I asked Chomsky if Jerry had won the bet. He replied with a terse "No". I asked Jerry, and he said he didn't know, because Chomsky was then refusing to talk to him. Academic spats can be such fun. Smart people love to attack each other's intelligence.