Boring back through time fetch the stones quest, while their time travel theory made no sense. It was like something unoriginal they thought about in the last moment. When the fight happened, of course, like always, almost no casualties on the heroes side.
Let's not forget the cringe moments where they put some unfunny obvious "jokes" in there to force some laughs out of the audience.
I'm not saying it was all bad, but overall, more bad than good.
It's a 5/10 movie at best. You're just exaggerating it's quality because you follow the mainstream opinions like a sheep and never thought objectively about something your whole life. But who knows? I'm not a psychologist.