Well, if we look at the anatomy of a Touhou fan, we can see that brain activity does not revolve mainly around that of which the average human does. We in fact see that instead of the average Touhou fan thinking of sex every second seconds, they think of Touhou every seven seconds. But of course, averages are terrible ways of judging things, because see, Gpop has Koishi on the mind at all times, and therefore unbalances the scales. However, what we do see is that reflexes and hand-eye coordination are improved in comparison to blah blah blah...
When it comes down to it, if you know of Touhou, you're a beginner. If you play or watch or read or listen to or whatever to Touhou, you're a Touhou fan. If you do any of the above constantly, your a Touhou addict and are in the right place. If you're like Gpop and wanting Koishi every second of the day, then you are what I would call a Touhou specialist.
Pardon me if I overused Gpop as an example or exaggerated on Gpop's character a bit.