Ahhhh...This is what I was looking for. So, it is a bit of a nod and a wink joke because as you said they're not necessarily loving on their husband. That makes perfect sense. That's what I thought it meant because it is so clearly not a category filled with tales of women directing their lust & love upon the men they married. Some are downright nasty toward their husbands. Again, I am passing no judgment on the category. In a similar vein, up until 4 or 5 years ago I had no idea what a "hotwife" meant. I thought it was a misspelling of "hot wife". LOL Oh, how wrong I was.I wrote, like, a whole-ass essay on this, but the TL;DR is that the name is meant to be a tongue-in-cheek joke; they're loving wives, but they're not necessarily loving on their husband. Then, what was originally a wife sharing/swapping/swinging category became... well, what it is today.
Thank you, NoTalentHack!