You wrote "But you don’t get to dictate social norms for everyone else." My response of "you don't get to dictate boundaries" refers to that.

No assumption there, other than what you've been asserting about social norms as somehow justifying violating boundaries.

Doesn't matter that you have some anecdotal experience with the people you've asked. I've asked people about this in person and they seem to agree with me, so it's a wash.

And I'm sorry your enjoyment might be lessened, but maybe that's just a price you have to pay in a world where other people and their respective enjoyments & preferences exist.

Lots of people find hugs & contact both pleasing and comforting. Maybe there's even a general biological need for it. That doesn't generalize to suggest that unsolicited random hugs & contact with you in particular is necessary or welcome.