Well it's not like every straight element is always well developed or stuff, but I guess not-straight stuff needs to be held to higher standard or something to justify itself. For some reason.
" the plot never even hinted that Kuromu, at least in theory, could be involved in something like that"
Do you mean like being gay or being involved in romantic affairs in general?
I guess I can roll with stuff easily because I assume that every character in fiction is bisexual until they say black-on-white that they're not into men/women. lol