The thing for me is, the way Dirk describes the ultimate self versus the way Davepeta described it feels like two different versions of the same concept.

Whereas Dirk discusses the idea that he's drowning in these iterations of himself and has become subsumed by some conglomeration of them, Davepeta talks about the concept as if they have the ability to perceive their sprawling existence but still maintain a strong sense of who they were; they specify there's a Dave and Nepeta who are LOUDER than the rest of the voices.

The way Davepeta describes it doesn't sound bad. The difference might wind up being philosophical; whereas Davepeta can perceive their whole self and be fine with all their potential lives, Dirk has witnessed some of his alternative lives do things he finds reprehensible and thus gave in to acting like that because he views himself so harshly?

WRT to Vriska though, the fandom has been talking about her since day one when she was on equal footing with every other child in her group. I think there's a chicken and egg scenario where one side is exhausted over how much Vriska is raked through the coals in the mouth of fandom and another side is frustrated that she gets to carry on and "atone" whilst her victims don't get to even be relevant anymore.

Then again, the fanontinuum might bring Tavros back around, it gave Nepeta second chance so who knows!