Apart from actually getting the updates when they are released. I could (on a 6s, coming up on 3 years old) have access to the iOS12 beta, should i so wish.
I will have access to the full release on the day it is released, as will devices as old as the 5s (5 years old?) and the iPad mini2. Even the last iPod touch will get it.
Are we any better off from the meaningless spying? maybe, slightly, but probably not.