Wayne wasn't the subject of very many hits in hockey. CTE isn't a factor that you can blame. As it goes with shit stains, everyone around him probably has the CTE as they were collateral damage, guys like Dave Semenko (it's never been publically disclosed but he was post-mortem investigated for it after dying of cancer) or Marty McSorley (who is not dead but he states he has memory loss and other symptoms).