“If you want to race, turn up, pay your money, and stick a number board on you bike. If you’re slow, you lose, if you cheat, you get DQ”
^^^This is the truth of it. Strava is not any less worthy in theory but when the accuracy can be out by 30m and never gets better than 5m its not valid. How many wheel lengths is 5m? In a real race you would lose. Best to use proper timing chips and photo finishes if available to confirm a finish position.