Will - great post, enjoyed it a lot. I've always thought you were an absolute giant though. I think your next course of action needs to be to go and do Frank at Ilkley, as clearly Ben has a bee in his bonnet about that one and it'd obviously be piss.
Take Frank at Ilkley for example. If you're 6ft (or have a reach thereabouts) you can span from the starting left hand hold to a really good pocket. It avoids doing a violent drop down off an ok intermediate. There's a queue of tall people who use this beta and say its 7C+. Is this the true grade? Probably not. It's just the great majority of people who climb it/ post it on social media are all notoriously tall and their voices drown out the minority.
There's a similar queue of short people who say that Impropa Opera Sit is 7C+, and Grand Sit is 8A, whereas I've seen the first move characterised by taller folk as almost being 7C+ on it's own!
I've no idea what grade Frank is but I had a session last year just after having done a handful of other supposed 8s in similar style and couldn't touch it; literally couldn't do a single move. It then took me two sessions this year plus lots of training in the intervening period. On the other hand, walking in to Crookrise with a friend recently I mentioned that I'd like to try Razor. He promptly suggested I'd think it was about 7A+ due to my size, to which I replied that this would be my fourth session on it!
My point is that morphology is one thing but having the strength and skill to haul oneself up the problem is quite another! I think this is sometimes forgotten.
I'd agree that sometimes certain voices will drown out the majority but I think that's more because people will often gravitate towards things they excel at or which suit them. It's then more likely that they'll do the problem, which allows their view to propagate over the opinions of those who aren't suited to it, find it harder and are therefore less likely to try/do it.
Slash grades are the way forward if you ask me, but then no one wants to do a 7C+/8A. Of course the well rounded climber should focus on things they can't do as much as things they can.
I'm glad you consider it worthwhile. I've also just remembered that I never got round to finishing your ZY replicas.
It's quality, much appreciated. Really ought to re-acquaint myself with those as well.