This is terrible for hobby boards because it means that content from long-timers gets drowned out by newbies asking the same questions over and over. In my experience hobby subreddits are completely dominated by inexperienced newbies giving one another the same cargo-cult advice. That, and straight up image posts with literally 0 value (for example the front page of /r/simracing at any given moment is usually about 30-50% pictures of just a steering wheel / rig from someone saying "got my new wheel/rig today").
The old days of forums were great for hobbyists because the long-running threads would stretch into the dozens or hundreds of pages of comments. Newbies could be directed to the longer threads or deep-linked directly to older comments. The format surfaced all posts, but did not favour recency - old threads could be revived (necro'd) or kept up top indefinitely. It wasn't perfect but it was a system that favoured long-timers over newbies.
People switching to Reddit has less to do with "it's Reddit" and more to do with the UX of Reddit being better for what people tend to want to do on a forum. Discourse is OK and comes close in some places (has great Markdown editing for example), but "1 account for everything" alone is somewhat of a killer feature.
It's a shame that Stackexchange didn't get OpenID to catch on anywhere other than Stackexchange. Could have been a big help in driving more attention to independent (and maybe even federated) platforms.
Any reasonable forum with - checks simracing - 168k members would have a dozen subforums for different reasons soas not to drown out the general forum. One might even be "post your rig" or "newbie questions".
But the rub with traditional message boards is, that they don't scale well. Some subreddits have many, many thousands of active regular participants. It's hard for a single subforum to operate at that scale.
Makes me sort of want an HN forum though. Maybe limited to self posts and with a more chronological feed.
Chronologically by last update, otherwise you could always read /r/yoursub/new, but that's only chronologically by last original post. By last original post doesn't help much. For slow-moving subs, it doesn't change anything much; for fast-moving subs, it's okay-ish if you care about posts more than comments, but you still lack curation (however imperfect).
You go from the most outrageous at the top to the most discussed at the top. All content gets a chance to be read. Even if it the first user find it uninteresting. On reddit, if what you post gets a downvote very quickly, you're basically done.