I'm not sure where are you from. But in London we have the "Flatshare" culture. Sometimes people move to a room without having a clue of who will be their flatmates (and it happen to me in my first home)...
We recomemend our users to meet their flatmates before having a tenancy. But this should be applied for anyone, not exclusively LGBT+ people. :)
Regarding "hookup site", we believe there's other apps better developed for that purpose. But actually, on Grindr (most used gay dating app) you can find enumerous profiles saying "Looking for room" or "Room available".
There are already loads of outlets which are focused explicitly on hookups. I struggle to see a reason that this pretty innocent "flatshares for people who don't want to be gay-bashed" site would become one.
does that matter? not to me. sex work is work and sex workers usually make it clear as to what their listing is about (otherwise they won't get work).