I've been logging rides on Ride with GPS for a long time - started by using the phone app. When I bought a Garmin device, I was able to fairly quickly and easily enable syncing between my Garmin Connect and Ride with GPS accounts so that the rides are uploaded automatically. At some point I decided to also start uploading rides to Strava, so I fairly quickly and easily enabled syncing between my Ride with GPS and Strava accounts - it even automatically uploaded all my old rides. But if I wanted to sync up rides from Strava to some other service and it seems my only option would be to download and then upload all the data manually; maybe it would be doable in batches instead of individual rides, but it would still be a manual process.

It seems fairly clear to me which provider is the one being difficult here.