That basically matches cinemascore/RTverified user%. I mean, there's always a reason to exclude imdb ratings due to being fake polls but they may be less terrible than people often think.
60% of imdb votes gave Matrix 4 a positive grade versus 65% on Rotten Tomatoes (which mandates you buy a ticket through fandango to vote). They all line up to B-/C+ when you remember that when you drop 6-7 points on rotten tomatoes verified user scores that has a decent linear correlation to a single point decline in cinemascore.
I wouldn't trust imdb in this sort of situation, but I also don't think it's lying or obviously a result of spam especially given how the film's flopping.
The real problem is that a lot of the core divisiveness is "do you like the core concept they're aiming for." IMDb's never going to be a good way to capture that because it's leading to too many A/F grades.
I mean, I probably would have given the film an F. I really dislike hyper explicit meta commentary which really tanked the film for me in a way that prompts a more significantly negative reaction than a film simply being objectively bad (Snake Eyes). There's more to my unincluded 1/10 grade (worse action, etc.) but I think it's expected to get extremes illustrated in this spread.
More interesting to me is the IMDb gender split.