They care that a specific random Ruby utility was by design installed in bin(7) and thus require that Debian specifically modifies the package so that it goes in sbin(7)? I call shenanigans.
I think the idea is that on every OS you talk the talk. Windows uses backslashes instead of slashes. etc. You meld application to OS, not the other way around.
GEMs on Debian should follow Debian ideology, much like on windows they follow windows way.