100% agree.
I think I forgot to highlight the point I was trying to make. They might assess someone as having certain needs, but it doesn't mean it will be put into practice or can be put into practice.
Often other people aren't performing great either just because humans aren't very efficient and skilled, everyone has their own problems, lacks in skills, and fatigue is a factor too. Asking for help is within the norm too. So there is no need to declare beforehand that you're going to perform not as good as expected or declared, because most people don't.
That meant I had to find a new job and if I walked in to a place limping that would mean no jobs for me. In a way it was good, I had to learn how to walk properly again.
I don't think I could ever hide some things tbh, like my issues with hearing, but if you act as if it's a no-problem, others will perceive it that way too. It's not the degree of deafness that would be considered a disability in terms of special education or to not be able to do most jobs, though. It's rather mild (although I need some degree of accomodations and it's annoying and sometimes isolating), obviously someone with more profound hearing problems might not be able to act as if it's a "no-problem".
I think I wouldn't mention sensory overwhelm as a problem to deal with, though.
Many people work less hours than written on their contracts, for example, because if they do what they're supposed to do in a shorter time, nobody's chasing them. If you said that during the hiring process, it could constitute a problem, though. It's all about the context. During the hiring process, you're putting the accent on the negative this way, and the company doesn't know you or your positive sides yet. Most people applying offer overly optimistic self-descriptions, that is also the context, so you need to show yourself in a positive light as well to not stand out and to not communicate that the negatives are an optimistic description of you.