People who don't follow the rules, then get mad at you-

Like recently, I had someone comment on a roleplay, asking if I could roleplay a brother to their female oc. And I'm like 'h u h' because this roleplay was a bxb one. Ya'know, male slash male? Guy and guy? N o t f u c k i n g f e m a l e? Then they get mad at me, saying that they read the rules and it never said I wouldn't do that kinda roleplay. Like what??? Where the fuck did it say I would?? Should I go on a highschool roleplay and make a toddler because it never said I couldn't? Should I join a roleplay with a oc, make up powers midway into the roleplay then get mad when I'm kicked because my oc was accepted, so surely their god powers were too??