The P(Y) and M encryption are always turned on, those are the military signals. SA can’t be turned back on, most of the satellites don’t support it. Also, it w

The P(Y) and M encryption are always turned on, those are the military signals. SA can’t be turned back on, most of the satellites don’t support it. Also, it would be disaster to lose GPS accuracy worldwide since so many users depend on it. It would also be pointless because there are other constellations like Galileo and GLOSNAS. Plus, multiband receivers are getting more common to support the new L5 signal. GPS jamming and spoofing are more useful because they can be targeted to area. As is happening in Ukraine.