I think part of what's getting [person] here, though (if I'm not overstepping) is that 1) people *really do* talk as if privilege is equivalent to personal relationships like parent/child, teacher/student, prisoner/guard etc. in order to *take away automony from less privileged people*, and 2) "relationships shouldn't occur along privilege lines" is an actual argument people make in order to make bigotry sound less bigoted (it's like an enlightened "keep to your own kind!") or to make arguments that are intended as liberationist but actually contribute to oppression (the examples I've already cited of "all heterosexual/interracial relationships are abusive" have actually been made, albeit it by fringe groups--but they can have influence when they happen to coincide with the dominant beliefs of society).