This is really a feature that should be implemented by Strava, not Garmin. It is Strava who plugs into the API of Garmin. This API offers the acces to the data in your account, but it is Strava who decides what to do with it, or whether it reads all, or just a part. The API permits both of it. So speak to Strava, and if the requests are frequent enough, they may start to listen.