I'm not saying iOS 9 is running like crap, but in 99% of the OS, it performs WORSE than iOS 8 which is not what they CLAIMED when advertising iOS 9. What don't you understand about that?
How can they advertise that it's going to perform BETTER when running on Metal, when it actually does the opposite.
The fact that some people don't notice or care is irrelevant to the situation. Maybe they're the same people who can't see screen tearing in video games or those that aren't bothered by a widely variable frame rate… or even notice a variable frame rate.
I'm pretty sure I addressed that in my reply. The advertised what they were shooting for and what they want it to be like and what they want people to perceive it as, as most advertising goes, given that many things don't live up to what they are advertised like. No one says that's good or right, but it's the reality of advertising. Repeatedly saying that in thread after thread isn't going to change any of that or do anything. Yes, we get it, no, it's not good, but, unfortunately, it's not really new or unusual.
And as for performance, again, there have bene plenty people referencing to it being "crap", "garbage", "unusable", and all kinds of other extreme absolutes--and while they might personally think that, it doesn't make it that way for the vast majority. Even if things perform worse as far as animations go, for most people that's not something that creates a bad experience for them--it doesn't mean that there aren't issues or that they shouldn't be dealt with, just that they aren't as bad as quite a few make them out to be, and certainly not for most people. Certainly at the very least in the context of "why isn't this a bigger deal" or "why isn't Apple doing some sort of a public apology and rolling out some huge quick fix for it all" it's certainly quite relevant.