We don't have any, to my knowledge. We don't even have a slot in the public data-dump, yet. Tag preferences will also not be published, because that is private data. But I think your guess is going to be pretty accurate.
That said, as I tried to get at here, I think there's an important point that down the road, the non-name/genre/platform tags will be a lot more useful once we have more content. Parsing through game-name might be sufficient now. But once we get more games, and those games get more questions, it becomes more useful to be able to sift, say, questions about [weapons] in Sora from questions about [bosses]. Or something. We don't actually have a [bosses] tag.
In terms of what to observe and what not to: tag preferences probably only help for the game name, genre, and/or platform. Past that, the main use of the other tags will be more for sifting within a specific game to find answers to a question, rather than questions to give answers. Which is entirely a good thing.