The principle of free speech is about protecting the marketplace of ideas. Broadcasting a person’s whereabouts continuously in a subscription feed is legally protected speech obviously but it’s not obviously a violation of the motivation for the principle of free speech to have such messages be against the Twitter rules.
Most homeowners' personal home address is publicly published on county government websites. Everyone on both sides of aisle agrees that the unwanted reposting of such on social media is doxxing and a bannable offense.
Every day I wake up and wonder what the free speech absolutist's new definition of free speech would be.