Loved it up until Endgame as silly popcorn fun.
Absolutely cannot get to grips with all the multiverse stuff, maybe it's just age.
As someone who has found at least some superficial enjoyment in even the worst of it, the whole thing is a complete mess, from a wider story-telling perspective.
They've introduced characters and done nothing with them. They've had "important", existing characters and done nothing with them.
There's been absolutely no pay-off to anything that's happened, across eleven films and twelve seasons of television (and counting). It will be (at least) fourteen films (if you include Far From Home) and seventeen seasons of television before the next Avengers film, based on their current schedule.
For comparison, there were five films before the first Avengers, four films between that and Age of Ultron, seven films between that and Infinity War, and two films between that and Endgame. None of the television output remotely mattered in the first three phases.
Since they kicked off Phase Four, it all
might matter, but it's basically impossible to tell until they announce/release something else. WandaVision, Ms Marvel and Loki have all been referenced. Falcon and Winter Soldier will also matter by the time Thunderbolts is released. Hawkeye, Moon Knight, She-Hulk, Secret Invasion, Echo and the two seasons of What If all seem effectively pointless at the moment. Even half the movies seem completely aimless. They've basically pivoted to stand-alone projects but keep shoe-horning in things to remind you that they're all part of something bigger.
I thought they'd drawn a line under it all with Deadpool & Wolverine, but then they went ahead and announced the Fantastic Four are going to be in the next two Avengers (despite their film being set in the 60s and in another universe) and Robert Downey Jr. is going to be Doctor Doom.