Come on, that's not quite accurate. Who did JB hire that was involved in OP? Contador is a maybe. Popovych and Armstrong, but this is based on interpreting code, no evidence. Actually, he tried to hire Basso as well. Hmm, maybe you're right!
The crux of your argument is certainly true: A lot of people forget that Rock is just a Continental team. If we look back at the UCI's rules for doping, in theory a rider can come back after 2 years after a doping violation, but must wait 4 years until they can ride for a Pro Tour team. Of course, the Pro Tour doesn't mean anything anymore, but Rock is never going to get an invite to a GT anyway, let alone many other European races. So there's definitely bigger fish to fry with some of the big Euro teams looking the other way as bad as Rock.
Actually, really it's the UCI that isn't enforcing the letter of the rule in this, and other cases. But this is nothing new. Take a look at the anti-doping charter they made every rider sign. What an incredibly powerful took to use as a deterrent to future doping. And yet, not one time have they tried to use it, when there's a slew of riders (Vino, Kashi, Ricco, Schumacher, Rasmussen, Kohl, Valverde, etc.) they could use it on.