the OP isn't talking about talking about a block of rooms as a pool area free of children. It wouldn't be too hard to make a pool area Adult's only. There are some of those out there who don't have children and love Disney.
As for PI, most of the people who were going were CM's off duty just trying to let off steam(I guess WDW didn't like that. It was always packed). And most of the people I saw at PI were young(under the age of 30). When you spend all year working hard at your job(some jobs aren't easy) and raising three girls you figure to be able to relax once in awhile.
I bet if this post was put in the Resort board it would get a different result.
In my opinion, it seems like people think that being able to "relax" poolside without having to hear children while at a DVC resort shouldn't be done.
No one is saying "adult only resort" just adult only pool areas.

You always hear about someone complaining about the noise at the Allstar resorts poolside after 10 PM. I always hear that. Not so much at DVC.
How many here have going on a
DCL trip and we pissed as an "adult" you couldn't ride the slide but you could on other cruise ships? How many wanted to hang out in the Oceaneer's lab and play only to find out "No adult's allowed"? Look,
I know Walt created all of this for family's, in my 6 trips to WDW I have taken kids on 4 of those trips. 2 have been kid free. And all of our trips have been amazing
I think I will post something like this post on the resort boards to see if it's just DVC.