Deadpool scored 85% on rotton tomatoes and that makes sense, it was a bit different than the normal "Marvel" films and was well acted but it is totally not something I would enjoy.
Napolean Dynamite scored 32% and strictly speaking, it was a very oddball film. I really enjoyed it and there are more than enough quotes in it to still make me laugh over 10 years later.
The idea that crowd-sourcing reviews leads to some kind of useful truth is marginal at best but downright wrong.
The problem is curation. I don't want to poll just about anyone. I only want to poll a selected list.
Selected how?
We can go by "seriousness", respect and proven knowledge, like the S&S Poll or the ASC for best cinematography [1].
Or, as you said, trust someone (or a group of people) because I like what they like.
[1] https://theasc.com/news/asc-unveils-list-of-100-milestone-fi...