Bad optional content is still bad content. Ignoring it won't make it go away. Ignoring bad parts of a game doesn't make the game good, otherwise every single game ever is a 10/10.
It also doesn't help that developers spent time and money on something that isn't Fire Emblem in a Fire Emblem game.
@ the topic: I'm not usually bothered by fanservice in video games, but it has no place in FE, IMO. At least not to this extent because I know there has been fanservicey characters before in the older games. But this is just otaku pandering.