I'm a comic book fan first when it comes to these movies, movie fan second. I don't care that people hate MoS and BvS, I love them, if you don't, awesome. But when it comes to Marvel movies (which I love too) it would seem that any dissenting opinion is quickly shot down, or dismissed. Flaws are quickly glossed over in the MCU, or ignored completely because of the Marvel logo, which is wrong. I wouldn't do the same with DC, I didn't like Suicide Squad at all, or Justice League, they were bad movies IMO.
That being said, you should definitely go and see Endgame, I'm going to watch it again once the crowds have dissipated. I hope my future viewings give me a better opinion. Honestly, it is one of the most bizarre movie going experiences, one minute I'm almost jumping out of my seat because what I'm watching is so mind breakingly awesome, the next I'm resisting the urge to throw my drink at the screen because the choice made with a character is ridiculous. When it works, it really works, I'm just hoping that on further viewings the negatives will become a little clearer