The option for automatically installing the Rapid Security Responses was added in iOS 16.4.1.
About Rapid Security Responses for iOS, iPadOS, and macOS - Apple Support
You sent me this link and you did not read it
Besides on apple support site
By default, your device automatically applies Rapid Security Responses. If necessary, you'll be prompted to restart your device. To check your device settings:
I posted earlier
So I screwed up my system upgrading in IOS 16
it turned it on without me
and moved me to IOS 17 I guess.
I am "systems analyst" for 3 iPhones
they must be in sync
or I would go crazy
I did not turn it on 3 times.
my daughter has attested to it, no automatic update