6 months has passed after Part 2 has ended, and people are still criticizing it, even fans who used to viciously defend it. That's how bad it has fumbled.
While I can admit that Part 2 isn't one of the worst works, the experience from it is pretty awful.
Characters are too underutilized at best or too unlikable at worst. Part 2 has done awfully dirty to Denji that I think refocusing on him ended up being the wrong move. To repeat something I said before, "We want to see the best of Denji, but Fujimoto only wants to offer the worst of him. By that, I meant a lousy parody of himself."
The worldbuilding is worse with blatant plot contrivances. Any sort of emontional sendoffs turned out to be frustrating for one reasons or another. Underwhelming payoffs after another. And Yoru just cannot carry it as a final villain. Honestly, when the Yoru "fight" begins, I don't have any expectations for it anymore and I don't think Part 2 could realistically end in a fulling matter. And then Chapter 231 happened. Somehow, it's worse than I'd imagine. Denji ended up joining Public Safety again after the reset, but now in a worse position. Followed up with an ending that's far less hopeful than intended because he didn't put much thoughts into it.
"But you see, Denji is crazy, he will definitely make it far as a devil hunt-"
No, this is not the same Denji from Part 1 or even most of Part 2. Not only this is a different Denji with no previous memories who can't transform, he also has lacks the driving force to be crazy and almost have no choices to make by himself outside of preventing Asa from falling over because those are somehow better, apparently. That's also even assuming that Kishibe is even with the Public Safety in the reset world. If it's not Katana Man, then this Denji definitely won't make it far with even Eternal Devil. Even then, there's still probably his heart condition or the prophecy to worry about. Alright, I'm getting ahead of myself.
More spirit to you if you want to continue on reading Fujimoto's works after Chainsaw Man, but I don't have the heart to do it anymore.