Saying this is the best Thor movie is like saying Rampage is the best Uwe Boll movie (well Rampage is better than all the Marvel movies that's for sure). It's true, but it doesn't really mean much. When the bar is so low there's nowhere to go but up.

Comedy is one of, if not the most, subjective genre in cinema. If the humour doesn't click with you, it's pretty much impossible to judge whether the jokes work or not, leaving you with only the story to latch onto. And the story is cliché: Hero doubting, losing or giving up their powers then getting them back. It's a tired and overused trope ever since Superman II. It's not a very good trope either and a lazy way to raise the stakes. I don't know why writers and directors love it so much. Not to mention the first Thor movie already did that.

I can already tell how the pitch meeting went:

Feige: Taika, people loved Guardians of the Galaxy, so make it a GOTG style comedy. People love the Hulk, so put the Hulk in it. People love buddy movies, so make it a buddy movie too. Oh, and have Thor lose his powers because that's totally something we haven't seen before in a superhero movie.

Waititi: But, I can put my own personal stamp on it, right?

Feige: Nope.

Waititi: Okay, I have to pay the bills I guess.