>>50026368
I don't think most people hate the actual game itself. As you said it's ok for a mobile tap tap timewaster. I used to play SIF and Bang Dream for years before and Sekai is pretty much the same game but with Vocaloid music and it simply feels more polished and enjoyable for me so I can't really hate it.

That being said the vast majority of its fans are painfully underage and they can be annoying as hell. I don't really care myself because I avoid communicating with children to begin with.