it's simple really, one can feel the person making the demands is disrespecting them, and forcing them to do something that isn't normal, something that isn't required, etc. Take bernard hopkins and jean pascal for example. Pascal had no right to do that shit, the slander, and hopkins knew he didn't have to do anything other than what has already been required. two sides to everything.
it's one thing to ask someone to take tests, it's another to accuse. And so far all these guys asking have accused (floyd, pascal & and now berto).
If these guys are really that concerned, they need to go to the state athletic's commission and have a case heard. So far none of these guys have done that. Floyd said he wanted to clean up the sport, but he hasn't contacted one single person in making that possible, not one. So until those steps are made, they can't complain if guys aren't willing to bend over backwards to take some outside tests. Same goes for UFC, they follow under the same rules as boxing.