Regarding the two others, which fit to varying degrees in the category of PDA, no, I'm not OK with it nor would I want my grandchildren to witness it...but neither...listen closely here...would I propose that such behavior be regulated by law. For better or worse, we're now far beyond that point.
Still, human nature and the laws of nature are hard-wired on a lot of this stuff. The sight of guys publicly kissing will cause an instinctive reaction of revulsion in a large number of ordinary straight men. Think back to Michael Sam and the Kiss Heard Round The World.
Of course, now 7 years later, nobody can actually admit to such feelings for fear of being drummed out of polite society, but the hard fact is that PDA among gay men doesn't advance the LGBTQ cause for this very reason. Even gay people appear to understand that.