I also liked Thorbowski, and the journey he went on, just didnt like him abandoning his responsibility at the very end.
He abandoned his responsibility five years before. And Valkyrie picked it right up. I thought it was fitting that he give it to her and get out of everyone's hair.
My point is he essentially learns nothing, his entire journey thru this film and all his appearances was for essentially nothing. He starts as a partying responsibility-less jackass and he just goes back to being a slightly less jerkass manchild who shirks responsibility to go play.
That he fell into despair after IW and wallowed in it thru Endgame was fine, he was hurt and that is understandable, its a regression through tragedy, it is basically his last hero test, but the final hero moment was realizing he was never meant to be Odin. Thor then took that to mean (well, the writers wrote that to mean) he could just be the Thor that Odin banished.
He could have, perhaps should have, partnered with Valkyrie (which doesnt mean a couple) to finally lead in a manner suitable to him. To take his own place not as a placeholder for Odin, see Ragnarok (psst: he even has the eye patch), but as Thor.
Thor is a good leader with an astounding moral compass, which is displayed throughout his arc as he grows and also by how he has a tremendous impact on Loki. Shirking his responsibility yet again might even spit on the deaths of his friends and family that fell throughout his arc, but it certainly feels as though it ignores every lesson he was setup to learn throughout his journey.