Your implication is that Apple should fix it in a way that suits hundreds of millions of people around the world. That's delusional, there's no one-size-fits-all for everything... You'll find many various toggles and options in iOS as a result. It's just one more.
To those who don't understand the issue with the delay, it isn't so much about the quantity of time lost from our natural lives... It's that it ruins the muscle memory flow we've learned over the last few years.
Wouldn't this go against Apple's fundamental principle of having devices just work, without getting in the way? Having to repeat gestures because it doesn't capture the first one isn't natural or fluid. It's also strange because we're so used to it responding to our first touch. Some people are very quick at their devices, and now it's restricted to a certain speed.
Also, consider that there are threads about how Apple's multitouch screens are tens of milliseconds faster than Androids and other devices, and everyone goes on about how that's always been what makes Apple product feel so good to use. Wouldn't all those people dislike having delays and gaps where the screen doesn't respond?
Seems more unlike Apple than one more simple toggle, or making the input still active while the animations are going.