I suppose part of the problem is the forums here, which have separate threads for "Major Roguelikes" and "Not Yet Major Roguelikes". Why is there not just one "Roguelikes" discussion? The "Not Yet" is especially silly, since games like Powder, Brogue, etc are clearly never aiming to be like Crawl or Nethack. Coffeebreaks and 7DRLs are similar. Why are we forced to think about the genre in these irrelevant terms?
If anything the only distinction should be between core roguelikes and roguelike-likes (or games with some roguelike features). And even that distinction just leads to silly debates.