>>149479159At the MCU's peak era of success, around Phases 2-3, they were genuinely succeeding in getting large audiences to show up to movies about characters most normies had never even heard of before, just because it was the new MCU movie and it was virtually a guaranteed good time.
You can argue that maybe some of the characters they've introduced in Phases 4-5 are just inherently awful and there was no way to get something good out of them, but the normie audience don't know or care about the comic source material. Black Panther, Doctor Strange, Ant-Man and the Guardians were as much Literally Who? to them as the Phase 4-5 heroes have been. More people would've given some of those movies a shot if they hadn't already been burned by bad sequels starring heroes they did like.
I think there is a definite problem with the Disney+ shows being something nobody's really watching past the really early ones, so making the shows relevant to the movies has been a real problem. But having killed off or retired a lot of the popular characters is a real problem, and they've failed to create popular new stars to replace them. Worse, whether it's turning Hulk and Thor into comedy characters, or turning Wanda into a villain, or refusing to recast Black Panther even though Boseman supposedly wanted them to, they're losing the popular characters they had left, and often doing it in ways that leave the audience burned and unhappy. Things like that happening enough times will have contributed to people checking out, and it's not Endgame being "a jump-off point" that killed the MCU's popular appeal, it's movies in 2022-2023 that people just didn't like.
Also, the MCU has been running since 2008. A 15 year old today wouldn't even have been born when it started, and the MCU is something his parents were into. Another side effect of the MCU just not being 'cool popular thing' anymore is losing a lot of the casual and female audience, it really is mostly just male nerds left now.