When I looked at the service thread, I saw people offering different services of avatar design, signature design, software design etc.
That's the beauty of Bitcoin. It opens up new markets where you can monetize your skills and work for crypto. Some people buy and hold, others trade, but I think the best way to acquire Bitcoin is to work for it by investing your time instead of money. Some users are doing that by creating artwork, writing, translating, coding, managing campaigns, etc. If you have those talents, you can do it too.
When it comes to statistics and various data you see posted on the forum, you will realize that most of that comes from a handful of members. You mentioned some of them in your OP. I am sure that if you just asked them, they would be glad to help and push you in the right direction.