Android 8 confirmation before restart Is it possible to configure Android 8 to ask for confirmation before powerdown/restart? Is that option manufacturer dependant?
Android does not offer this feature by itself (barring restart confirmation after applying system update).

It is possible that OEM customized ROMs or custom ROMs provide this feature. If you're device is rooted, it is possible - one way I am aware of is using GravityBox Xposed module