I've finally worked out why I've never been "randomly" chosen for a COVID test by the Zoe app when so many of my friends have been tested multiple times.
It's because it's not random at all. They only send tests to people reporting vaguely COVID-like symptoms within the app. (Seems like everybody but me already knew this!)
Sunbeam City is a anticapitalist, antifascist solarpunk instance that is run collectively.