I think the movie delivered on the hype. Although I have had discussions with people complaining that the heroes were idiots and could've killed Thanos multiple times. But I thought it delivered with the action, character development, and storytelling.
A common comparison I've been hearing is that it's like one long dbz episode. And I can't really disagree. It has a shit ton of build up all throughout the movie with "omgee what's gonna happen if he getz da stonez rawr" and then ends on a huge cliffhanger.
At least it wasn't like Harry Potter 7 and 8 where the first movie was boring af with like 30 minutes that we're actually important, then the 8th movie was huge.