jt10000 wrote:
What would I do? I sure wouldn't tell them it's illegal - it's almost certainly not.
If they are MOP/BOP I'd ignore it.
Illegal in the sense of violating the WADA code, not criminal law, is the implied use of the word here.
WADA makes no distinction about competitiveness or MOP/BOP, excepting the RCTUE. The RCTUE sounds like exactly the right choice in this case. If defines what "recreational" means, rather than allowing people to just arbitrarily decide they're "MOP" so they don't need to follow the rules. If they don't have one, they're doping. (assuming they're actively racing in USAT-or-IM sanctioned races).