Was George Orwell an Optimist?
Kenny Dorham || Trompeta Toccata || Whistle Stop || Una Mas
The data you get here is going to be about the subset of gamers that use Internet forums. I suspect that's going to skew the results from the larger population of all gamers.
It's worse than that. For example, it shows half of one percent are under 18 which one would think would be a natural consequence of having to declare that you are 18 or older to open an account.
There's never been a scientific poll on BGG; it's all smoke and mirrors for the pleasure of those who like seeing numbers and don't concern themselves with whether or not those numbers are valid.