From a pure enjoyment standpoint, I can't say that a work that spends more than half its length with characters just talking and arguing only for them to be completely wrong about all the decisions they arrived at is good, even if you agree with them IRL, in the story it led nowhere. That score right there, 6.5 or whatever it's at when you're reading this, is definitely accurate.
(In the end god created all life on Earth and everyone depended on it to live, despite 20 chapters of r/atheism saying otherwise, god killed himself and then life ended by mistake, because he thought killing himself wouldn't do anything to humans)
At this point I believe manga authors do it on purpose, they just can't help themselves with making that one last chapter that just makes years of work pointless.