No, reboot to payload changes the console shutdown process, by using an unsigned lp0 binary, which also allows reboot to payload. The lp0 patch fixed the wake from sleep mode when using a version of horizon that doesnt match the fuses, and also allowed us to use the lp0 binary to reboot to payload, which means that the shutdown code in that binary has been patched with the warm boot patches as well. Really to turn off the console, they flip a bit in the max77620 registers, that shuts the chip that supplies power to everything down. Half the reason L4T for Switch, or just standard Switch Linux, cant go into sleep mode. There is some progress now that ByLaws has ported minerva and lp0 patching to Coreboot, but there is still work to be done on the firmware side of things.