Your first point is fair, and I'm not really sure if it's just the technology maturing or a symptom of stifled innovation. Personally, I think there are still innovations to be made in this space, even big ones. But it's not just Apple's fault. The duopoly of iOS and Android has completely cornered the international market, new players have almost no chance, and the 30% cut app developers have to give Apple or Google puts them at a big disadvantage. I think a shakeup in the phone market would be very good for consumers.
iPhones seem to have better battery life.
I just have annecdotal evidence from people I know with iPhones (and mine, too, though it has been a while). It seemed to me, at least, that Apple phones tend to slow down quite a bit after a few years, and they start having battery problems. Some people I know seem to have gotten lucky with the battery thing, others not so much. But if it works well for you, then great!
More importantly, the "garden" is not the problem. If someone chooses to, they should be able to only use Apple products, download only Apps from the Appstore, and trust Apple with their data. It is the "walled" part of the deal which is the problem. Once inside, there should be an out. That is what the DOJ and the EU are trying to accomplish.