I can't take making money in a paid to post site or forum as a real job or business, because i can't be financially stable working in a paid to post site.I guess a paid-to-post forum can be considered a real job or business model. However, its success depends on various factors such as the quality of contents being posted, user engagements, and the forum ability to attract advertisers and sponsors.
Monetizing through paid memberships, advertisements, or partnerships can make it a viable business, but it must provide value to it's users to ensure sustainability of the forum.