Oh are you referring to the "stop app activity when not in use" setting?
I always turn it off because it changes random permissions without my interaction.
If this is the toggle that also decides *if* an app can ever be stopped from running, this is really bad.
I set permissions, storage scopes etc once on startup and never again. I remove apps when I dont need them.
This feels like Android being a babysitter, but correct me if I am wrong.