I kind of disagree. His last arc is weirdly coherent with some basic problems typical of Tats' hysterical worldview: it always goes back to what lack of pussy does to a man.
The Prince killing himself to redeem e-thot Snow White isn't particularly novel for Tats: it's a man having to fight extreme porn addiction and his failings (symbolized by the Coomers) to rescue a woman ruined by Society (once it was personal issues in the romcom era of Sinfest, then it was The Patriarchy, then it's THE JOOOS) so he can have a happy ending. Of course Tats is now old and alone so the only ending this can have is death and regret because THE JOOOS have won and ruined his chance at a good happy life, but it's weirdly.... coherent with his themes.
I still kinda believe it's incredibly personal for him, a way to express years, decades of frustration, loneliness and schizo self-reflection. "I could have been happy if only the Jews didn't make all Modern Women to be e-Whores, I could have SAVED them". Tats always had the simp mentality, even now with his pagan Nazi larping. It has always been about pussy, it always will be.
Methinks, that's also why he doesn't particularly care about political coherency, being funny or having a market for his webcomic (let's be honest, who's left reading them bar the people in for the ride?). It's kind of Dave Sim-lite, a scream into the void through the only methods he knows.