According to an interview Meryl Streep did:
“I went deep, deep, deep, deep into Rotten Tomatoes. I counted how many contributors to Rotten Tomatoes. There’s a very strict criteria that allows you to be a blogger or critic. Of those people who are allowed to rate on the tomato meter, there are 168 women.
And I thought that’s absolutely fantastic, and if there were 168 men it would be balanced. If there were 268 men it would be unfair but I would be used to it, if there were 368, 468, or 568… actually there are 760 men who weigh in on the Tomatometer.”
Possibly the white men who make up the majority of those votes have a whole different idea of what’s wonderful than, well, the rest of the movie-going populace?