No at some point they become uselessly slow or won’t receive necessary updates. Like even some dumb chat app requires a ton of resources. And I’ve also had an iPhone that worked just fine until there was an update. After that it wasn’t practical to use any more and I switched back to android.
I’ve had 4. And I’ve used each one until it was completely useless.
I bought 2 of those 4 for my work. I do vr/ar and some clients require ar on the phone or tablet. And I needed one of them when I had an Airbnb, because you need the app for that. The again you can replace that with android running on a pi or sum.