you just said small PDAs. and no its not an exaggeration that my mom would slap me for getting some over-the-shirt boob action. She would be especially mortified if I did it in public.
I have heard plenty of blue hairs complaining about teens making out in a park, or in their car. Or how that girl shouldn't be wearing those clothes, or boys need to pull up their pants, or some other form of "put some clothes on". or some older couple getting PG/PG13 playful with each other.
and as someone who has been yelled at on multiple occasions by members of the public for holding hands with a woman I was in a relationship with, I guess I am not seeing too much of a difference, and you must have lived a much more sheltered hetero life than I did if you have never seen any hetero actions called out. not saying my experience is as wide spread as theirs, but again its not THAT different of a standard.
its like women wanting to be treated like men, run your mouth to guy and you are going to get punched in the face, compete against them in sports. equality sucks, and the grass isn't always greener/as green as you thought.