True, the writing is sub-par but I think what keeps people from dropping this is the art style and/or the main couple (even though that has problems in itself). You gotta admit the art style is kinda cute and funny, and if you ignore the communication problems Yui and Kase-san are a nice couple. IMO the writing is not bad enough to drop this but it could 100% be better. I'm kinda trying to convince myself Fukami is used as a stepping stone/obstacle to grow Yui and Kase's relationship, which is sad since it kinda feels like sacrificing a character but I think viewing it like that makes it a bit more bearable to read.