All the character moments in GOG2 are fake because the movie tries to retconn your memory to con you into believing they are all rooted in scenes in the previous movie. They're not. The movie does a complete and unjustified 180 on Mary Poppins and does things the first one should have done, like giving secondary characters a personality, without acknowledging the fact they were blank slates. It would have worked as an original, but as a sequel, it is just a tribute to how poorly written GOG1 was.
I still don't buy the working class family man Michael Keaton thing. Half of his actions cannot be justified by those things. During most of the movie he's a millionaire trying to not go back into the upper middle class and he behaves like a sociopath. Also, his anger is bogus. It totally makes sense to have a war zone filled with dangerous tech be cleaned up by a tech genius with government connections who used to be a weapons specialist. Seriously, if 9/11 had left uranium fragments on the site or something, would you have trusted Joe the Plumber with cleaning the wreckage?
I am now thinking WW could have been so much more feminist. By the end of the movie, the main arc is about Diana's learning to navigate a world that doesn't fit her simplistic worldview, and very little is achieved in the matter of sticking it to the man. Aside from the occasional « That's a woman! » joke, she encounters no male opposition whatsoever.
If we're talking about clichés in superhero movies and overdone tropes, you have to recognise that « The power was inside you all along. » has to be in the top 5 of been there done that. You even mention how it is present in Thor.
I will admit Ragnarok doesn't have much in the way of character arcs. Valkyrie has one, albeit not a very good one. Banner/Hulk too, in a way. The most important one to me though is the Loki/Thor relationship arc, which is always a bit dodgy, but I thought this movie had the best one of all.
In Homecoming Peter learns the value of not becoming an Avenger and sticking to his roots, giving himself time to be a kid who moonlights as a friendly neighbourhood superhero. Given how many teenagers cannot wait to grow up and do adult things, I think there's value there.