I really don't know why F95 hasn't separated the Futa/Trans tag yet. They are objectively different concepts, especially in story based VNs and games like this site hosts. Futa is a fictional concept that can mean a lot of different things to people (some don't like futa with testicles, the futa must have a vagina, etc), while trans describes real people who actually exist and whose experiences are explored in some games.
And it lumps FTM trans people in with futa, which makes no sense at all. Maybe when the new site is done they will work on some tags, who knows, but they really should be separate and it is pretty insensitive that they aren't already imo.