WOW, 37 pages, for a problem that should not be caught in attention by so many people. If you ask me do I notice that delay, I would answer “yes”. But does that matter? I would say “no”. And 1s? Not much of a big deal for my day to day use.
Also, if this is how Apple does to convince people to buy a new phone, then I would argue those people are way Too OCD than ever. Regarding the iPhone X, since it does not have a home button of any form whatsoever, I doubt Apple will eliminate that delay just because of that. Keep in mind that gesture is more prone to error than a single click. There will be people whining why removing home button completely and keep mis-triggering functions they don’t need at that point.
We will see.