On WikiHow there is an article on "How to Tell if an Autism ABA is Harmful". It pretty much explains everything. Except why human beings feel they must force others into being "normal" in an abusive and sadistic fashion.
- Some therapists will not accept a person looking or acting autistic and not allow them to be themselves. They may attempt to remove autistic characteristics such as lack of eye-contact or most stimming, using phrases like "table" ready" or "quiet hands". They may try to force the autistic person into fitting in or making more friends, which should be a personal choice.
- Some therapists train the autistic person to look and act happy, even when they aren't, or pressure them to give and accept hugs and kisses unwillingly. This is basically setting them up for sexual and emotional abuse.
- No one is too autistic or "low-fuctioning" to be treated with kindness and respect. A good therapist will be this way to an autistic person.
- If an autistic person cries or gets upset, a good therapist will stop whatever they were doing and show concern (or remorse). They will care about the person's emotional pain. A bad therapist may press harder, pin them down, or turn it into a battle of wills. A bad therapist may call these emotional states "tantrums" and insist theyt must be dealt with harshly.
- An autistic person receiving abusive therapy may have increased meltdowns, suicidal thoughts or behavior, or become violent, even if they weren't before.
So apparently not all ABA is bad, but since human beings seem genetically wired to abuse people who are different and unable to defend themselves or get help, most of it is. That's why elderly people and children in foster homes are also treated horribly. 