Most people above the age of 30 are very unlikely to go to a protest. Between 18 and 30, they are just unlikely.
There is no one size fits all security best practices, you should analyze how much you are at risk before deciding what safe practices would be useful.
It’s a bit presumptuous to imply this personal choice is the default or expected norm, given the importance of peaceful protests and the like as part of the civil discourse.
I’m sure are right about the numbers, most people won’t go to a protest. But I very much want to live in a country where people can peacefully protest without fear of having their digital lives completely by the government.
And a protest is just one example situation of how this can be abused to trample on privacy rights.