>forums
They seem to suffer with the phone-as-primary-browser crowd.
Short vid formats seem to be winning currently. Easy to create & post with a phone or tablet.
The Reddit layout bridges between forums & vids pretty well ...can be forum-like if a user learns how to use a subreddit's /new function.
The (hosted) forum software Discourse is notable, btw. Used by Hubitat, Samsung, and other smarthome vendors. Has a modern feel.