I have to be bit against decky. Out of the five steam deck crashes I’ve had past year all of them were because of decky frontend. At least that was what the crash report said and it had also option of disabling decky until next reboot. So my experience was decky crash -> no decky&happy -> system upgrade -> decky crash -> no decky &happy -> system upgrade… rinse & repeat

I’m not a decky (or steam deck) power user and last I checked the uninstall was not trivial so take my opinion with a grain of salt. I wish I never installed decky.