I liked this but I do think that kinda relationship isn't healthy in the long run - (though just because Maki is on the bottom and we don't see her reciprocate doesn't mean she NEVER does anything for Nico).
Even if they proffer those roles - I'd assume after a while & they get more comfortable it would even out more.
On the shipping war stuff - I don't remotely understand how thread posts have any baring on actual characters - if i love a pairing and saw lots of annoying posts excessively ranting their support - it wouldn't impact the things that made me like that couple? I would just dislike the annoying posts in question.
That said - when there is a clear and great pairing and then you see a doujin of a pairing setting them with others - that they probably hardly even spoke to - it makes no sense to me. You might as well pair them with darth vader.
But I'm not gonna go into those threads to slag the stories off - any pairings I don't like or get - I don't click those stories so its not a problem then. I might make the odd joke but to each their own.