No matter how good and loved a game is, there will always be a bunch of people hating on it

Oh yes, especially among gamers (derogatory). Even a basic search of "bioshock infinite hate" will bring up countless threads. The attacks and abuse got so serious they even made multiple news articles, with some accusing Ken Levine (creator) as a Jew making a white killing simulator.

But it was very amusing, because if you tried to engage with some of these haters and why they didn't like the plot, they'll say that they hated how Infinite's plot was more "political" whereas Bioshock 1/2 were more "ideological."

How BioShock Infinite Became One of the Most Controversial Games Ever - https://www.cbr.com/bioshock-infinite-most-controversial-games-ever/

That, but it was especially because the game didn’t live up to the marketing material. It under delivered on a lot of promises

I don’t think the massacre had anything to do with the poor reception of the game, or at least I never heard of anyone complaining about it