Never heard of lgbt cruises... In a way it's a good thing so all the weirdos go to those and not on the normal cruises. And if anything happens to those cruises, well... 
They’ve been very popular with the 🏳️🌈 🏳️⚧️ crowd since the 1990’s. If you go on a cruise, remember to bring holy water and blessed salt to exorcise your cabin, just in case. You never know who last occupied it. (I always sprinkle holy water around hotel rooms for the same reason. You don’t who last slept in the bed or what activities they engaged in.) When I used to camp, I’d do the same thing with blessed salt around the perimeter.