@wyene Right.
But technically speaking, it is possible to share things privately (including outdoor activities).
(One could do that right now, although it would be painful: export GPX track, send via @signalapp or https://github.com/magic-wormhole/magic-wormhole or some other e2e-encrypted method, send photos the same way, etc ... but not exactly a UX anything like Strava ;) of course)