Could you please explain the business value of such rules?
Ad visibility/exposure. If a topic takes off most people won't browse through all the posts, and regardless of the topic length, the first 1-3 pages are more likely to be seeing more views. Participants of campaigns with such rules can expect to be watched closely by users and mods alike.
^ The reasoning is not too hard to grasp. It's in fact on page 1 by some one else.
The forum won't/can't have a major role in SEO, especially from a cost point. It's a Web3, thus the link value is too low. Before claiming SEO, take the moment to look at the first thread and note that it DOES NOT state users need to focus on any keywords.
One baseless accusation after the other. Humorous and ridiculous.