Um, I might point out Heteros are not in the habit of making out on Mormon church grounds. & Miss Chicken peeing on each other is what was considered indecent in SF, not hugs & cheeks kisses.
Giving someone a hug and a kiss is not "making out". It is quite common behaviour for women, and some men, to hug and kiss when greeting where I live (and women here will often hug and kiss either sex)
I think that peeing on someone would be considered indecent in most places in the world and should be arrestable behaviour (and I am certain it is considered indecent in most situations in SF)- but all along I have been talking specifically about this case not the case that you brough up that is totally unrelated to this case.