They do have a forum moderator who watches for it, but of course he can't be online 24/7. The biggest issue seems to be that it's too easy for an automated script to create a user account for this forum. I understand they want to make it easier for the legitimate user, but as you note other forums are much more successful that Roku has been. Fortunately, the titles themselves are usually such a giveaway that it's not too difficult to ignore them.
Nvidia Shield, Roku Stick (3600), Ultra (4640), Premiere (3920), Insignia 720p Roku TV, Sharp 4K Roku TV, Windows 10 Pro x64 running Serviio and Plex on a wired Gigabit network.