I believe the men are scamming the women. They aren't married for love or lust, or if they were, that faded with age. And they are so fake just by default that even the ones who do still love each other probably don't feel secure about it because of course they'd say "No babe, I just love you and am not interested in anyone else" regardless of if that's true or if they are having orgies at every business trip.

And cosmetic surgeons target insecurities and promise the world whether or not they can actually deliver.

So it wouldn't surprise me if what happens in a bunch of those cases is an insecure woman gets the surgery done, it looks like it does, and their husband gets a kick out of them ruining their looks in an attempt to impress them, also being happy that it reduces the number of other men that would be interested.

Similar thing for "influencers" or women in porn that buy into the "this is what men want" lie.

Though ironically, I bet there is a sexual angle to it, too, where seeing their wife ruin their looks to impress them turns them on, but I doubt the sex is loving.

Anyways, just my attempt at making sense out of something that seems to me to do more to put them on the far side of the uncanny valley than to help them look any better. If they unironically like that look, I can't relate to them at all.