I’ve always struggled to see the upside to celebrating any sort of heritage

And I've always struggled to see the upside to celebrating the community team or whatever, but that doesn't make my opinion more rational, valuable, or human than anyone else's.

folk can be happy about whatever, I guess, as long as they’re not denigrating others.

"Whatever" "I guess"... These words aren't in here by accident, but this overall sentiment is the one actually worth pursuing IMO without all of the passive aggression.

You and the Aussie don't seem to understand that you're advancing Musk's (and other racists') "arguments" by equating overwhelmingly positive movements with reactionary, retrograde movements that use co-opted words and rhetorical tricks to pretend they're the same thing.