I also noticed that before. But I think before, they give bigger points than now in every post they do, I also noticed that some people have more post than point, but when I found out , it's because they convert it into token.
As i know you can receive points by referals, airdrops , bounties ( before ) and of course more you write in terms of words, more you receive, so may be this people worked hard in social media to share posts about forum, who know.