Out of curiosity, what is the advantage of rebooting your phone? I disn't do it for a couple of months and I don't see what gets "better".
Besides, turning it off and on again will reboot it too. Just slighty more inconvienent :)
For example, this makes malware persistence much more difficult, as verified boot checks for integrity at every boot and reverses any unsigned changes.
Persistence on iOS and Android is very difficult. As an example, at least on iOS, threat actors have sometimes failed to achieve persistence, so they hijack the shutdown process and simply fake shutdown by animating the shutdown flow. The user thinks they've shut down the phone, but in reality the device was never shut down and never went through the verified boot process. However, since Steve Jobs decided iOS never needs a manual reboot, gaining persistence may not even be necessary, because people don't reboot their iPhones.
Once the battery runs out completely, then you can be sure verified boot is helping you out. I'm sure there are now other mechanisms that fixed the example of faking the boot process I wrote about earlier.