While there are plenty of valid reasons not to tell the government where you are 24/7 (including reasons like "I don't feel like it"), I agree that protests shouldn't be a reason. Functioning democracies don't arrest people for peaceful protests, and the governments that do won't be fooled by just not bringing your phone with you in the age of surveillance planes regularly sweeping areas to track movements, facial recognition, and simply finding you because they've arrested other protestors you know already.
For protests, the physical switch is an attempt to find a technical solution to a societal problem, which rarely works out. You may as well keep your (Android) phone in your pocket (but turned off, though that won't help with iOS' Find My network).
> "Functioning democracies don't arrest people for peaceful protests [...]"
That might be true on planet Ogo, but not on planet Earth.
> "For protests, the physical switch is an attempt to find a technical solution to a societal problem, which rarely works out."
Another utterly absurd statement. Killswitches are, amongst other places and situations, useful on the battlefield (and therefore urban "battlefield", e. g. protests). And turning a practical solution to tactical and operational problems into a discussion about the inapplicability of such solutions to cure the "ills of society" at large is just... bizarre.
For protests, the physical switch is an attempt to find a technical solution to a societal problem, which rarely works out. You may as well keep your (Android) phone in your pocket (but turned off, though that won't help with iOS' Find My network).