Is opening an app on an iPhone 13 actually noticeably slow? What you're saying is true if you go back to a distant enough horizon, of course, but... 2-3 years? I don't really see it.

I'm on the other side of the fence, and just replaced a Pixel 7 with a 9. And quite frankly I bought it because I was Supposed To. I'm sure there are benchmarks to say otherwise, but routine use is basically instant on both and absent a professional desire I quite frankly would have just waited until I broke it.