Strava has trivial to use controls to shut down this type of data gathering. You simply define zones on the map as privacy zones and voila, any travel in those

Strava has trivial to use controls to shut down this type of data gathering. You simply define zones on the map as privacy zones and voila, any travel in those areas will simply not appear publicly, and will not be part of public heat maps or anything like that. Of course, the original point of that is to avoid people knowing where you live to come steal your expensive bike. But it's useful for other reasons too.