I've always been an android guy myself. I use Linux and Windows (when I have to) and don't own a modern Mac so the ecosystem is irrelevant. I prefer to build my own desktops and I prefer the greater variety of laptops available in the PC world.

I think there is very little difference in photo quality or speed when it comes to flagship android or apple phones. One probably hops over the other with each new release. But again, I prefer the variety of Android phones available. There's more to choose from (though admittedly I'm usually buying a Samsung).

Apple designs have become somewhat stagnant. At least they are experimenting with new designs on the Android side...foldable phones, multiscreen phones, etc.

The biggest reasons I've chosen android phones in the past though are starting to change. I always loved the fact that android phones used to have an sd card slot for expanded storage. Unfortunately, this is no longer true expect maybe for some more obscure phones. Also, they are more open in the sense that you can download apps that don't have to be approved by the Google Play Store. Useful for emulators and such which generally don't get approved. And running BOINC which is something else I do. Sadly, it sounds like this may be changing too. In which case, there will be very little practical difference between the two platforms.