First of all, bigotry is not a disability.
In fact it is the OPPOSITE of a disability. It is a constructed process that promotes unfair access for the person who engages it, it does not reduce access or create barriers for them. It is to unfairly advantage them.
Also bigotry is a behavior and thought process that is learned. It can be unlearned. Most of the time people do not bother because unlearning is hard AND reduces unfair advantage.