Reasonable people should just ignore metacritic user scores, full stop. Problem solved.
That's correct, but there are STILL people out there who think user reviews mean something, unaware of how incredibly biased those things are. Probably the same kind of people who think online polls mean anything (which is basically what user reviews are).
They are subject to a massive self-selecting bias, which directly translates into people with a bone to pick, meaning the bias is usually overwhelmingly negative (despite some people counter-reviewing when they see the ludicrously biased low reviews, which ultimately just adds to the unreliability of the data).
And that's not counting how easily "doctored" the results are through review bombing campaigns. For example, DAI could easily have pissed off an MRA lobby group, which then decides to flood the user reviews with negative scores to harm the game's success (and they don't even have to be honest about why they're down reviewing).
Ultimately, what this means is that if metacritic had any ounce of sense or care, they would outright disable user reviews. They're meaningless, they're terribly easy to manipulate, and bear no reflection on the product being reviewed. At most it can tell you that some people are angry about it, which applies to everything in existence.