This article picks apart a bunch of biases by the researchers of a given paper. The object of study was the differences in behavior between a group of autistic people and a group of non-autistic people when choosing between prioritizing value for oneself or value for the community.
I recommend reading the paper itself too. If that is, understandably, too much for you, I suggest you go for the introduction, the conclusion, and the segments mentioned in the article.
You have misunderstood that line. The line is linking to this tweet, which says:
Which the article sums up as, as you quote:
This is a true statement. If you publicly criticize ABA, certain institutions are going to close their doors for you. The article is saying that autistic people are going to criticize ABA nonetheless when doing so is in line for their values, as the paper suggests, despite the authors wacky interpretations, and I think both the writer, you and I agree that making that criticism of ABA is indeed good.