Why is it taboo to talk about how “the marvel movie formula” is getting old

I like marvel movies and have seen like half of them, but it’s becoming very obvious that marvel is just pumping out movies with the same, very formulaic script. I can literally picture what the movie will look like based on the title of the movie. The marvel formula is very predictable and has been used a million times, and it’s getting old. But I feel like I’m not allowed to say this because marvel has such a massive fanbase and there’s no room to criticize anything marvel does.