I am very late to the party but I'd like to share my thoughts.

I started lurking Renderosity gallery as guest in 2002 and I became a member in 2007.
I am no longer active as I used to be until 2014-2015 but I still log at least twice a month and once in a while I upload a freebie.

Many smaller forums unfortunately are gone but this place is still a community and the admins are trying to keep it alive.
And it's the home of Poser, one of my favorite tools, together with 3dsMax.

I was very glad when the owners of Renderosity purchased it from Smith Micro and saved it from stagnation or death.
They are actively developing it (Poser 13 will come soon) and listening to our requests and feedback. We still have an alternative to DAZ.

About the site... the growing flood of low effort AI generated "art" is concerning, of course.
I wonder if some of that stuff (including the occasional very explicit picture, quickly removed*) is posted by spammers or bots.

I am not an hater of AI in general (as tool has some interesting potential), but I totally understand the complaints made by many artists.
It's very unpleasant to know that someone will use your creations to generate AI "art" (often NSFW) without your consent,

Probably a daily limit of 3 or 5 pictures for user could improve the overall quality of gallery content.

One word about freebies. Don't take me wrong.
I never judge a free item from its complexity o with an "elitist" attitude.

A gift is a gift.

Anyway... a lower daily limit could be useful in that section as well.
People who wants to share photos of walls, fractals or AI generated textures could group them (a 20 pics pack instead of 20 pics).

Image flooding apart, there are other problems as well.

I noticed that very few 3d modelers are actively posting in the galleries.
In late 2000s and early 2010s the site was full of character creators, architects, car designers.

I have no simple solutions to offer, just an idea.
Maybe 3D modeling contests could bring back some of them?

Thanks for your attention, Good day to everyone!

P.S.
Renderosity, thanks to moderators, is still a relatively safe harbor.