UFC's completely self-funded anti-doping program they voluntarily created did all that - they still need the ability to sign guys to fight in less than 120 days and they have an exception for that, until mis or over used they get the benefit of the doubt for n other reason than simply because its an exception to their own policy they didn't need to create.
No the ability to sign new fighters on short notice went out the door when they said they were serious about drug testing. And if USADA testing requires you to be tested 4 months ahead of time, that is for a reason. They want to have the cake and eat it too.
But like you said, they really did not need to design a program that is damaging their product, but now to add exceptions is to add doubt to their drug policy as well. They can't have it both, credibility goes out when exclusions are introduced. Mark Hunt has made statements of frustration about this. An indicator of how this unfairness is received by the already exisitng fighters on the roster.
Just saying that after paying such a high price in many many ways, why do somehting that puts their drug program in question? Silly to me.
And again, not towards Brock, but the UFC.