My first writing about disability was about an ABA school that I interned at when I was 20, which was a very ableist and passing-obsessed environment. Being in that environment I was forced to confront things I'd tried not to think about.
I remember when I first started writing about this kind of thing I was very careful to say that I wasn't anti-ABA and thought ABA could be really helpful and useful. I've kind of dropped that whole thing, not because I'm against behaviorism--I arguably am a behaviorist--but because I guess I am against any school or therapist who identifies as "ABA." ABA is technically a way of teaching, not what is taught, but it has historically been associated with physical punishment and it still is very much associated with passing. So I tend to make certain assumptions about anyone who identifies with the label ABA without trying to apologize for or justify it.
Recently my dad was trying to convince me to work at a very old, famous ABA program, because of the benefits. When I pointed out that the person the program is named after used to give electric shocks to children to stop them from flapping their hands, my dad told me that he had researched this on the Internet and "they don't do that anymore." But this isn't enough for me.
It's not enough for professionals to refrain from the most obviously abusive practices, especially if they identify themselves with the doctor who introduced those practices. If you're going to work in an area that has that kind of history, you have to address that history. It's not enough to just stop hitting kids because you shouldn't hit kids--you have to think about why people like you were hitting kids in the first place, and how they got to a point where they decided it was okay, and how you might end up getting to a similar point.