I think it depends sometimes. Like, yaoi, for example. Don't know what that really reflects, but there's some really messed up ones out there that people enjoy.
Shoujo could be for the people who really want to find love or like sweet fluffy things, drama could be those who find it realistic and therefore could help them in real life?
I don't know, but I don't think it reflects 100% about the kind of person you are. It could maybe reveal what kind of things you like, or kinks you could have, like bdsm.
Sometimes it can also reveal who you are on the inside, like some subconscious thing. If you're into harems, maybe you want a whole bunch of people liking you. So sometimes it can reveal who you are, sometimes not.
Sorry if this was confusing!
Do you think the genres/tags(of stories) you read or look for, reflects who you are as a person? I've been wondering about this for a long time and it kinda bothers me.
Thank you for entertaining my question! (⌒▽⌒)