My phone makes calls, sends texts, browses the internet, and runs just about every app I can throw at it. It does all of those things extremely well. So what if every once in a while a couple bugs slip in and a couple animations are choppy? Of course I would prefer perfection, but this is where the whole "just a phone" thing comes into play. If my phone works extremely well 95% of the time, is it really worth getting worked up over? No, it's not.
For fun, I just purchased a $40 2nd gen Moto E from Best Buy. I bet that it will do almost everything my $700+ iPhone 6s Plus does (and a few things that the iPhone won't, of course). But I have zero doubt in my mind that the 6s Plus will do those things far better and quicker, while having a better screen, camera, and build quality. That's what we pay the big bucks for. Not a promise of perfection, and not necessarily to do "more" things, though that sometimes is a part of the package.
But I digress- 9.2 is already shaping up to be what 9.0 should have been, so the vast majority of us can look forward to that.