Uncle just has cool vibe. Rock music people tend to be chill considering how queer folks like Prince, Freddie Mercury, Janis Joplin, etc were
Also this yeah, rock has always had awesome queer icons (Freddie has been a personal favorite of mine since I was like...8 or so?). Plus the uncle is a tattooed music store owner, I doubt he's one to care about fitting into the "norms" of society regardless of his sexuality.
While there are some great queer icons in the rock and metal scenes there are still alot of homophobic people in them as well sadly.
Aye, unfortunately true for anything and everything. While there's always going to be cool people, there's also going to be some shitty people. Personally I think music and especially rebellious music (like some kinds of rock) should about freedom of self and expression, but I am painfully aware that there are some close minded and hateful people out there who don't agree.