What I'm surprised about is that people complain about it a lot in Midnight Suns, but Persona games are really popular and they have even WAY MORE chatting than Midnight Suns.
Don't get me wrong, I understand how someone can dislike that, in Persona 5 I sometimes I do think it's a bit too much, but the games are still incredibly popular.
I don't think it flopped because of the social interactions, probably more because of the lack of marketing I guess, and people at that time avoiding Marvel games after the release of Avengers (which also really hurt Guardians of The Galaxy, another great marvel game that flopped just like Midnight Suns).