This stuff is tagged with the action; if there is gay stuff going on, it is tagged gay. If there is straight stuff going on, it is tagged straight. If people want to avoid gay stuff, they can easily do it by filtering the tag, and so on with the straight stuff. The tag describes what action is going on in the picture, not what the characters are. Tagging it like this makes it easier for people to avoid stuff they don't want to see.