I agree with this. In general, this is no threat to the Republic. Honestly. No rule should be needed. Generally, nobody needs to tell people about Western constructs of propriety and privacy. Sometimes, though, these things get muddled and we need a rule. When the rule itself gets muddled by a gender concern, things get a little more, um, up for grabs than I'd like. My problem, I guess, stems from the problematic dogma of "gender as construct," but that's a different debate for a different time.
Seriously, though. Aside from the sitting problem and the potential lines for the men's room, co-ed bathrooms personally don't bother me unless I need to poop. I was kidding before, but I poop nasty. Don't want potential mates smelling that. I really sort of support sex-segregated bathrooms.
Yay?