Q doesn't have many choices about where to post.
If we lived in the normal USA from 10 years ago, he could have used Facebook or Reddit or any number of different internet places.
But nowadays, places like Facebook and Reddit ban conservatives. So, Q uses an anonymous free speech message board, because he can get his message out that way. Because you can't use Facebook or Reddit for that.
We can just assume that Q would prefer to post on Facebook. But can't because Facebook bans. Because Facebook bans, Q takes what he can get.