I just think Apple and industry discussion not only encompasses every single article ever posted on the front page, but all stuff that isn't posted.
We use the main news forums for articles posted on the front page and Page 2. Many of the other threads about Apple are specific to a product or service so they have more specific forums to reside in. What's leftover are the general threads about Apple, e.g., what it's like to work in an Apple retail store, what Apple's competitors are up to, etc.
Since that's a catchall category that wouldn't have a huge number of threads, we combined it with threads about the computer and consumer electronics industries. Mixing in a third subject, Internet discussion (e.g., web technology, domain names, web sites) was another way to consolidate our "miscellaneous" areas.
I understand your point that the title applies to much of what this site covers. Putting this triple-purpose forum under "Community Discussion" wasn't 100% ideal since Community Discussion is the area of MacRumors that
isn't focused on Apple, yet many of the threads in this forum
are about Apple. But it helped reduce the total number of forum categories, which had become a problem. Every forum organization had advantages and disadvantages and we've revised it a few times.
The Apple, Industry and Internet Discussion forum has only about 5000 threads, many fewer than most of the hardware and software forums. But there's also a chicken-and-egg situation. If a forum is featured it's likely to get more threads and if it gets more posts it's more likely to be featured. Still, overall we think the forum has to take a backseat to the others.