Maybe I'm too much of a conservative, and I like to keep things the same... and so, I like to ask questions like;
'What's driving this evolving norm?'
Will this evolution stop at this stage, or will it keep evolving, and if so, what's next on the horizon?
I see human nature differently than some here, and of course, that frames our opinions. Some see mankind as progressing toward all that we can be - I see mankind as in a ruined state of what we were meant to be, and thus, I don't see (or trust) people/populations/cultures/societies to grow into better versions of themselves when it comes to issues like sexuality because whether or not we want to admit it or realize it, most people think 'below the belt' and are easily duped into thinking that what they want is okay.
Speaking only for myself, there are cultural "norms" that evolve or need to evolve. That is why cruelty to animals is now prosecuted, wasn't always that way. Send your 10 year old to work 12 hours in the coal mine? Kill savage injuns? I'm grateful culture norms aren't written in stone.