I've heavily edited your post. Continue talking about the problems you perceive if you wish, but do so without insulting and talking down to others. DigginthePast
This site is pretty much the default case-study in subforum overload (which disintegrates the conversation, which impacts flow, which dissuades user participation). Treasurenet had the chance to leverage it's first-mover advantage in this niche and effectively become the ground zero for all things metal detecting, etc, but gave rise to several viable competitors due to the way it was mismanaged over the years- both from a user experience and user-management perspective. This is no secret. Now that there's new ownership, it's probably worth talking about these problems rather than pretending they don't exist. People make mistakes, we all make mistakes.
When I talk about thinks like developing semantic on-page ad schema to monetize the content library, etc, those are things that will certainly be beneficial to the new owners and probably not something you understand. If Marc had understood them, he may have not sold this place.
The new owners have a great opportunity to make a few bucks here, if they play their cards right but they can't move too fast. This user base isn't exactly made up of 'progressive' types who are quick to embrace drastic change.