If you’re disabled:
Parents/caregivers saying things like “I wasted so much money on you” and “it takes so much money/effort to take care of you” and “be grateful I’m willing to give this much for you” are wrong.
Yes, it’s expensive (whether financially or physically or emotionally or what have you) to take care of a disabled person, but that is their responsibility. If they’re your parents, they signed up for the job as soon as they had a kid.
Disability is not under your control. It’s not your fault that it’s expensive.
No one should use that to guilt you or control you. If they do then they are wrong, and they are cruel.