The big issue is the phones. . . People are used to using Facebook or twitter and don't want to learn how to post images.
The forum allows everything to be here. If you used the old TCA group on Yahoo, there was a lot of information shared there, but it was hard to find after the fact and is now gone.
There are at least two zoom groups that meet regularly about trains - one is the TCA national and so poorly promoted that only a few national board members attend, and the other is Joe Algozini's Toy Train Hall of Fame.
Here's a page on Joe's site of cool items:
https://toytrainhalloffame.com/joes-blog/f/collectors-their-collectionsMostly postwar, but the lamp on the bottom of the page is certainly neat. Compare that page to the Interesting items thread here at train99:
https://www.train99.com/forum/index.php?topic=27.0Joe's site has been up longer than this forum, and he has more active members - the last time I sat in on a zoom meet there were at least 35 people- but not asa much depth.