Funny that you mention the macho mindset, as Chris Nowinski was on TSN's Off The Record, and defended the WWE's response that they had no knowledge of Benoit having concussions. Nowinski's response was that the WWE, much like other sports organizations, don't have actual doctors on hand for that type of analysis, and instead just have emergency doctors who'll send you to a hospital ASAP whenever necessary, which is where you may receive the prognosis of a concussion. It's then up to the performer to report to his organization about his condition, should he choose to.
He actually said that they DO have doctors, but they should specifically have neurologists.