These older devices have had a very good run of software support.
I've never agreed with Apple refusing to cut these old devices off from new versions of iOS/iPadOS when its clear they are not really capable of meeting the performance requirements. They always seem to go one version too deep with OS upgrades on popular hardware revisions, and you have to believe its intentional at this point. In the case of the 5th gen iPad, it probably went two versions too deep. iPhone 6s/6sp limps along on iOS 15 and the iPads should have stopped at 15 too.
Thing is, when do you cut it? Between what I said, what you said, and what
@rui no onna said, we get three different cutoffs:
-My expectations, which are basically “The device works flawlessly in terms of both performance and battery life or it doesn’t need the update”, in which case all A9 devices should’ve been cut off on iOS 10 (iPad 5th Gen; 1st-gen iPad Pros; iPhone 6s and 6s Plus)
-@rui no onna’s expectations, they said “leave 2GB iPads on iOS 12”
-You gave them a little more leeway, ending the 5th gen iPad on iPadOS 14, and the 1st-gen Pros on iPadOS 15.
This small sample of three people (even if we are arguably enthusiasts with more stringent requirements), shows three different cutoff points, three different opinions, and the funny thing is, they’re all valid!
A fourth valid opinion might be, assuming Apple drops at least the A9-equipped 5th Gen iPad on iPadOS 16, “It’s okay, I prefer the features and software longevity even if performance and battery life might be considered mediocre or even outright poor by some”. Do I agree with this? No, I don’t. Is that opinion incorrect or wrong or invalid? Not at all! Many people like the software support at the expense of performance and battery life, and that’s okay, maybe because they just sell it once it reaches that point (I keep everything, so it impacts me a lot because I don’t sell anything. That’s the main reason I optimise performance and battery life at the expense of software support).
I think that the only way to please everyone is to allow downgrading, but I don’t want to beat a dead horse, it’s not happening.
If you look at it like that, how do you decide where to stop? Stop too late, and performance and battery life suffer too much (if there is something the three of us agree on, is that iPadOS 16 is far too late to stop for A9 and A9X iPads). Stop too early, and I personally would be ecstatic (my favourite iPad ever! My 9.7-inch iPad Pro would be on iOS 10! So flawless!), but others would disagree, saying “a large number of my apps aren’t supported with new features anymore, and I can’t even download new apps, or update the ones that require updates to function”, and thinking that is okay, too, even if I personally disagree. Imagine the backlash if Apple were to end support for the 1st-gen iPad Pros on iOS 10! Planned obsolescence signs would be plastered on every Apple Store.
Three people, three different opinions, software support ranges from 2015-2017 to 2015-2022. Some people find conditions acceptable, some don’t. I’m not happy with my 9.7-inch iPad Pro’s battery life on iOS 12, because I know it was better on iOS 9 (it now gets me 10-11 hours with light use), and some would be. If I wanted to make everyone happy, I’d struggle quite a bit to decide!