Speaking for myself: I, like most autistic people, am a bit touch-sensitive, and I'm nearly always kind of uncomfortable with making physical contact with someone I don't know well (or really, even being physically too close to someone even if I'm not actually touching them, and the pandemic has only made me feel that even more strongly). It's not that I don't like being touched, I absolutely do like hugs and other forms of physical contact, but only after I get to know someone well enough to feel comfortable with it. At the very least I need someone I'm not close to to ask before touching me and give me an opportunity to respond to that.
So, yeah, I don't really want to have to expect physical contact from strangers, and I don't like it at all when someone pats me on the shoulder/back/head (or anywhere else, but that's where I'd typically get patted) or hugs me when we're not that close and they didn't really ask me before doing it, but some touchier people will do things like that, and most of the time I feel unable to do anything about it because some mild touching is just common and socially expected.