In reply to Offwidth:
I guess it comes down to what you consider 'within reason'. I would agree that some things are too pointless or minor to be worth listing, but UKC is a logbook not a guidebook, so there's a bit of balance to be struck between gatekeeping and letting people log what they want to log, even if it's log.
If you come at this from a bouldering perspective, it's harder to draw a clear line as to what qualifies - link-ups and variations and eliminates are sometimes just as prized and popular as the main lines. And then if people want to treat routes in the same way - I dunno, I don't favour that approach myself, but where do you make the cut?
I haven't seen a lot of trad crags where it's an issue, but some bouldering and sport crags have got really silly, where the crag listing shows about 5× the number of actual routes or problems, which from a potential visiting climber's browsing perspective is totally confusing. Basically every conceivable sequence of holds or way of linking bolts up the crag. Though it's not too hard for a moderator to put all that stuff in a separate buttress heading, which I would say is the best compromise to please everyone.