I also think having a particular scene or moment can get me to increase a score as well. See Vader in Rogue One. That scene alone elevates the entire movie for me by a full point (at least). It retroactively makes the earlier parts in the movie even better because they're working towards this epic payoff.
As for groupthink reviews, they don't mean much to me, especially when I don't know the people and especially in our hyper SJW world. I can't trust those people, and when it comes to reviewers, not knowing who is and who isn't some wacko virtue signaler, it makes them even less reliable. I prefer going off of the recommendations of people who's taste I'm already aware of.