Ok, that's just a poisonous, ignorant and unbelievably self-centered view to have.
Thor just had to find his place among his people, accept the fact that he can't change his brother through force, move on from his family's failures and develop confidence in his own person.
Saying his arc is getting new powers is as reductive as me saying Black Panther is about people learning that sharing Vibranium is good, m'kay?
Now, I liked both movies and yes, I liked Ragnarok better, but that's just due to the fact I feel more connected to the weird and heartful way someone like Waititi sees the world as opposed to the more grounded (but still heartful) approach people like Coogler or the Russos use for their movies. I can appreciate the craftsmanship and passions behind both projects without letting my personal views interefere, to the point were under analysis I may give the edge to Black Panther in direction and script, even if just slightly.
Saying you find anyone who thinks different is "almost questionable" is childish. Is greatly unempathetic. You're saying you either can't or won't even try to understand people thinking differently (about a movie no less, thank God these aren't life or death situations). So grow up. Do like Wakanda, do like T'Challa himself, and get out of your bubble.