Phones have reached good enough. In the first years of the iPhone, each iteration brought major important changes. Now, there's not much in the way of changes to get excited about. It's the same with other phones, too. 5G is maybe important, but more inevitable than exciting; same with usb-C. If Apple put a headphone jack back, that might be exciting though. :)
Desktop computers are laptops were around this level of good enough when iPhones started coming out. When was the last time an annual computer release was exciting? Apple's releases manage to get some attention, but mostly because they're pursuing alternate paths than the mainstream, and even when they were using mainstream intel processors, they didn't follow Intel's update cadence. Barely anyone is excited when Lenovo puts the next version intel/amd processor into a Thinkpad. It's expected, it'll be better, but it won't be exciting.
Desktop computers are laptops were around this level of good enough when iPhones started coming out. When was the last time an annual computer release was exciting? Apple's releases manage to get some attention, but mostly because they're pursuing alternate paths than the mainstream, and even when they were using mainstream intel processors, they didn't follow Intel's update cadence. Barely anyone is excited when Lenovo puts the next version intel/amd processor into a Thinkpad. It's expected, it'll be better, but it won't be exciting.