In a move similar to reddit or twitter, Strava is restricting API usage, and other policy changes.
I think an alternative to strava, which is also federated, would be really cool
EDIT: I know you can record teacks and keep them offline and there is plenty of ways to do so. I think the main aspect of Strava is the possibility of sharing the activities with contacts on strava itself. Like for peertube or pixelfed, the fediverse has the potential to allow any user to share what they like and the other users can see, boost, comment, from their mastodon, pleroma, froendica or wharever accounts. The fact that someone wants to share a track is his own business.
I deleted my 12 year old account over the latest privacy policy update which auto opted-in to using your data for unspecified AI purposes. There was some discussion here, and while a strava rep did give specific examples in their response, the privacy policy was not updated and continues to be both broad and auto opted-in with no way to opt out.
Regardless of the current use of AI, the broad privacy policy creates the potential to allow them to do many things with your data without telling you about it in the future. And that thread discusses some potential problematic uses that you could be opted into without ever knowing it.
The privacy policy needs to be more specific, and allow opting out (or better yet, make opt out the default).
And yeah, API change is pretty crap too.