Why are people so ableist?

Why is there so many ableist people on some groups saying just because someone is high functioning and on medical guardianship they can't make decisions to have sexual relationships because of it? That is not true. Being on medical guardianship doesn't stop one from having sex even casual and I know this for a fact because my therapist told me. Just because some people have trouble making medical decisions doesn't mean they can't make sexual decisions and it's legal for a guy to have sex with a girl under medical guardianship. She can consent to sex. What are your thoughts now?

Why are people so ableist?
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