Also want to say that argument is worded weird. They are saying that the average time for a second surgery/revision is 4 1/2 years but also saying that because Strasburg is past that time frame he is in the clear.
so it isn't necessarily that a most guys blow out their arm in 4 1/2 years and need another UCL, but that there is a window when players need another surgery and once you are past it, you are good. Who knows though. You would think that Tommy Johns were done on everyone at every level all the time if it was that small of a timeframe