Everything you stated is still an opinion. It's just based on a collective or using others tastes as perspective
Yes, that's why I usually write 'objective' to differentiate it from actual facts.
And there are plenty of reviewers who try to figure out what a composite amalgam of a gamer will think of a game and write reviews accordingly. Read their reviews.
I want to read a review of somebody's actual opinion. Even if that opinion differs from my own, I can learn more from an actual opinion than what somebody else thinks my opinion should be.
I have no problem with that. I also don't have an issue with those types of reviews being represented on Metacritic.
I also think that Yooka-Laylee is a huge disappointment to me personally, my role here is not to argue that the game deserves higher scores than it got from some sites. It's simply to show the distinction between subjective and 'objective' reviews, and that the latter isn't nonsense at all. It is a valid concept