Yeah, honestly OP asking “is this ablist” is a bit of a red flag given the picture they have painted. If they were an otherwise “nice” person using ablist language, then this language and possible categorization might be a clue to tell us more about who they really are. But if we already know they are a piece of shit… it doesn’t really matter what flavor of -ist they are. Just don’t interact with them. Don’t think about them. Problem solved. More labelling isn’t needed.