Anyone know if this policy would be enforceable under California law? (I realize Amazon HQ.) I know California has labor protection about non-competes, does it

Anyone know if this policy would be enforceable under California law? (I realize Amazon HQ.) I know California has labor protection about non-competes, does it also have protection for people doing work on their own time with their own equipment? I vaguely remember it does but can't find a reference.