you can download your data from strava, individually as flat files and in bulk. this has been the case for years, and its more recently a requirement of GDPR

you can download your data from strava, individually as flat files and in bulk. this has been the case for years, and its more recently a requirement of GDPR anyway. you have the right to your data, that doesn't mean strava has to serve it to some random 3rd party in perpetuity.