I can confidently say that there's likely no one earning $10,000 per month doing whatever here on Bitcointalk, probably besides the forum owner himself.
In the first place, Bitcointalk isn't a forum made solely for making money. This is for like-minded people to discuss what a lot of us are passionate about: Bitcoin.
Heh this is true, now.
Back in the 2017 ICO craze, you could get $5k weekly easy, with the right connections and "skills". I'm talking about legit stuff of course. Scammers are another thing.
However, if you had a good token/coin based idea and product, it could work. But those are few and far in between