If drone racing and MLG can be legitimate, sponsored events, Strava can absolutely be a sport. If it doesn't fit inside your current definition, you may need to redefine. Saying that because Strava isn't risk-filled, shoulder-to-shoulder racing makes it no less legitimate than TTs or Tris. I mean, at the end of the day Crossfit is a competitive sport, and it's just a bunch of people working out wrong.