Autonomy and choice is important, do you think less intelligent humans also deserve a right to autonomy? What about less intelligent animals? If you answered differently to these two questions, why?
Humans generally understand restricting choice is a good thing if the choice in question is committing harm. We don’t let people choose to rape, murder, etc. We don’t let people farm mentally disabled humans for their skin and meat. We don’t let people farm dogs and cats for their skin and meat. We do let people farm cows and pigs for their skin and meat.
Vegans have rectified this inconsistency, non-vegans haven’t. If you told me that you were fine with farming disabled humans, dogs, cats, etc. I’d at least applaud your consistency, but I have yet to meet a single non-vegan who is this consistent.