The low rating has no merit. I think the two girls are super interesting and cute. The guy doesn't even seem relevant. I don't wonder what the point of her "dating" him is?
The story is really good! I am surprised by how much I'm enjoying it given the low rating but definitely give this a go and ignore all these retarded incels
That's because mangadex displays the official title now, as it was licensed by Tokypop and they chose that name. Some other names can be found in databases like mangaupdates, here are the other names for it before the official one was adopted
Boys Gilding the Lily Shall Die
Boys Gilding the Lily Shall Die!?
Boys Who Get Between Yuri Are Better Off Dead?!
Yuri ni Hasamaru Otoko wa Shineba Ii?!
插足百合的男人不如去死!
百合にはさまる男は死ねばいい!?
백합에 끼어드는 남자는 죽어버려?!
The unofficial title also caught the attention of some seemingly homophobes from the content they post/their profiles.