>but phone posters killed the forum, the ui/ux just didn't transter over
I mean look how many retards on sites like KF were phoneposters, and 4chan especially. I disagree on that part, I think the part that killed it were the wave of new NPCs who wanted an "app" for it.
https://www.phpbb.com/community/viewtopic.php?f=64&t=2469156
https://www.phpbb.com/community/viewtopic.php?t=2590771