I’d rather have my phone secure against an exploit that’s being used in the wild than going to Facebook, WhatsApp, and Instagram.

No remove button was shown for me on my iPhone, even though it has the update installed.

On a Mac: https://www.macrumors.com/how-to/remove-rapid-security-response-updates/

I tried that on my 14PM and it won’t let me downgrade

Worked on my 11, but they really should add a progress bar or a more detailed message, as removal took longer than installation did.