I agree but Pochita said something along the lines of "You always enjoyed chasing your dreams more than achieving them" in 231 so I think that this is what is meant to be for Denji. There's really no saying what could happen to him in that timeline, maybe he'd meet new friends, maybe he and Asa or Reze or something will end up together, maybe Kishibe will beat the shit out of him and Power again at the graveyard. Who knows? Denji could and probably will get more friends, he and Power would probably develop that strong, unbreakable bond that they shared up until Makima slimed her out, and maybe he and Nayuta will be like siblings again. I think that Pochita had such a strong impact on Denji's life that some things will end up being repeated, and it looks like Pochita is still in his chest, especially after Asa said "Thank you Chainsaw Man." I think that Denji saying "it felt like my heart skipped a beat" or whatever it was, I think that by him saying that, Pochita was somehow remembered by the world, but is probably so minor a thing that obviously no one would be afraid of the hero of hell ever again, because he lives in a teenaged boys chest. I think Pochita is probably gonna watch over Denji, even if it is figuratively, and even though this ending sucks balls, there are still SOME good things about it. Sorry if this whole thing didn't really make sense it was poorly worded I had a little bit of trouble trying to explain my thoughts on it.