You know some of these people going "how could they give it a 9 or a 10?" are the same people that attacked and harassed anyone that gave it a score lower than a 9 before it came out lol
Just a thought, maybe some reviewers aren't fans of getting death threats for giving unreleased games a "horrible" 7/10 score, so they just spike the score slightly in order to avoid that.
There are bad reviewers, of course, but honestly, I can't say for sure I would be an impartial reviewer if I knew I could get doxxed and harrased for giving something a 7/10 -- I'd just give it an 8 and be done with it.
Except g*mers did follow though in a way, they sent videos meant to trigger epileptic seizures disguised as support messages to a journalist who complained about a scene in cyberpunk 2077 that caused them to have a seizure. Yes it's online and not "real world", but it still could have seriously injured the journalist