I don't think people are saying certain bugs shouldn't be fixed, lag or NC lookups, they're saying you've made your point over and over and are wearing us out sifting through the forums with your justifications. It's a bug, report it and it will get fixed in time.
Prior to iOS 8, most .1 releases focused on bug fixes, most .x.x fixes focuses on major critical bugs that were widely experienced. Since 8.x, many .x releases were about now functionality releases that may or may not have contained bug fixes. 9.1 is an enhancement release (mainly) and not a bug release, that's 9.2. There was clearly a shift to a more waterfall release with incremental changes along the way. Prior to 8.x, most major releases were x. oriented, iOS 4.0, 5.0, 6.0 (which brought us Apple Maps and certainly had people up in arms about the diminish of Apple software).
This is not about fanboy experience, from what I've seen in the last few months on MR. I often report substandard experiences I'm having without backlash, but I don't run over them same point over and over again. I let it out, mostly to see how widespread it is, and report fixes to my issue if I come across it. I also report Thames to Apple in bug reports.
I'm excited to get iOS 9.2, I'm experiencing daily major bugs, like contact search. I'm a developer, but I don't run betas even though I can, because I need stable daily drivers. I just don't have the budget for many spare devices to lie around in testing betas.
The modern waterfall design introduces more bugs into the release process. We sacrifice that for earlier access to new features. It's the way most shops do things now. Whether it's right or not is another story. Every iOS release has had issues going back to iOS 3, when I got my first phone. Texting MMS, Exchange access, iCloud issues, Maps, crashes, etc.
iOS 7 was a major departure in iOS design. We went from bit maps to a more responsive adaptive flow-based design. We're still dealing with fallout, but are able to support a wider variety of device sizes as a result. It's a good thing, but it did slow some things down. Which leads to a balance Apple always has to make between performance (graphics speed) and battery life. They need to constantly adjust to balance and optimize for both. Each iOS release gets it right near the end of the release train. I know Apple promised a lot with Metal, and I believe we'll see it, even if we don't yet. In the end, it will be better performance with better battery life. I'm not trying to be a fan or make excuses, it just takes time. And with a waterfall design, that's still a few .x releases away.
Why do I stick with iOS, because they will fix it, it will be free, and I'll get that release quickly when it becomes available. In the mean time, I'm living with bugs, sometime maddeningly frustrating like you. I report them. They may get fixed. I have a few that haven't.