That, IMHO, this is the reason why forums like this site do not attract/retain new members. Think about the thing that people want to *talk about* photography, a good proportion will be about gear, e.g. what is the image circle of the Cooke Viib 158mm? I wondered about that yesterday, but of course instead of asking, I did a web search and of course there are "real discussions" on this site and the LFPF site. I looked at the posts, find that some are from people whose opinions on lens matter that I trust, and I followed suit with a purchase. If there wasn't any prior discussion, would I have asked here? Probably not, because if it's so obscure that no one talks about it for the last 20+ years, no one would care to talk about it now.
How many people know that Stephen diRado probably shoots more 8x10 in a month than most people do in a lifetime, and his photos are quite masterful? Certainly not from this site nor LFPF (I believe someone actually mentioned him on this site a week ago, finally). Where do we see his work? By doomscrolling the Book of Face. How about Shane, whose work has been criticized numerous times here, but he has shot over 3000+ wetplates, and you can see his work (OK, he posts on too many groups, but whatever, doomscroll away...), again on FB? Some of his works are just fantastic.
So instead of photos, here we have people talk about gear, or trashing each other. Come on, a well known member whose tagline is "I leave digital to proctologists". Eff;'ing passive aggressive much? People like that are in poor taste, and tolerated because he loves Hasselblad. Big fat hairy deal.
In the end, we artists need to see arts. We don't need to see critiques. Who cares if you think my exposure is 1 stop over? As a photographer who has some experience, and at my dayjob, a senior director of engineering (that and $4.50 get me a cup of chai tea latte), I have come to the conclusion that "critiques" are worse than useless, especially to other artists. Too many people engage in negative criticism, rather than lifting each other up.
I don't know if the forums can be changed or "saved", but providing more opportunities to share arts, and a venue for useful discussions, could possibly attract new members. Yes, I know about the perils of popularity site such as IG, or a few years ago, px500, etc. I don't have the answers, all I know is that this proposed fix will not be the solution. Maybe it will help to retain some members, but by themselves, I doubt they will attract new members.