Occam’s razor. With two choices, the explantion that requires the fewest assumptions is the correct one. On that basis, the idea that some unknown entity has an organised campaign to consistently ensure BB’s horses fail drug tests across multiple state jurisdictions has too many improbable assumptions, leaving us with the simplest explanation that he is doping his own horses. As to his arrogance or stupidity, well, how many criminals ever believe they will be caught for their crimes? Added to which, BB has apparently ‘got away with it’ - five times.
Sadly, I believe this sorry saga will end in the usual flannel, compromise and whitewash by the racing authorities and in the law courts, BB will continue on his merry way, and the reputation of TB racing will sink even lower in public opinion. In the longer term, American TB breeding will suffer if the Kentucky Derby is nolonger a valid performance benchmark. Tawdry.