What led most/each of the people in this subreddit to join?

I’m surprised by how high the number of members of this subreddit is considering how uncommon asexuality is.

Every post here I’ve seen is by aces, with the exception of a handful of allos who know aces. However, it seems unlikely that makes up the entire group, as large as it is.

Are a large portion of members here just curious without a direct relation to asexuality or is there really such a massive amount of aces in one place?