[sulam]

Garmin couldn't directly disable this, once Strava has your data they can do with it whatever they want, licensing permitting. Which is a segue into - while I have no specific knowledge of this case, I do think it's somewhat tricky to take data from a third party and then hand it on to another third party. Presumably all of this was mediated by the user, and user's desires should be paramount here, but it's an example of why I believe OAuth is fairly broken and what we should all be giving permission to is capabilities, not access.