While that's a practical complication, it's one that has a huge number of holes in it—thus my mention of racing in particular, which is often overlooked as a "s

While that's a practical complication, it's one that has a huge number of holes in it—thus my mention of racing in particular, which is often overlooked as a "sport" despite the physical demands it can put on drivers. More broadly, it points out just how incoherent the demand that some athletes remain "amateur" is, when "amateur" is just used as a proxy for "unpaid": there's nothing noteworthy about a teenage driver winning a cash prize for a small-time race, and nobody in the pro racing world is going to say that they're not an "amateur" driver just because they got money for racing once.