He was definitely still hung up on the hammer too. Not the hammer in the physical sense, but it was clear after everything he's lost since he lost the hammer, that internally he felt himself less and less "worthy". Calling the hammer and having it come to him after everything he had been through and how he felt about it was a pretty big deal for him I think. Between that and the talk with his mother I think that's the first REAL healing we've seen for his character in a long time.
Thor writing has always been a little clumsy, so I get where people are coming from, but none of it honestly bothered me. His arc in Endgame is probably one of the ones I enjoyed the most. They all were dealing with what happened in different ways. His was just the most physically noticeable. Steve and Natasha both poured themselves into some kind of work to avoid dealing with it as much as possible, Clint going off the deep end Ultimate Hawkeye style, etc.