Here's a related link about CTE: https://www.abc.net.au/news/2023-07-04/what-is-cte-chronic-traumatic-encephalopathy-concussion-sport/102557776

If anything will result in rules being changed, it will surely be The King's diagnosis. But having said that...

Lewis said he had no regrets about his NRL career in the wake of his diagnosis, but suggested he may have approached the way he played the game "a little bit differently".

"It's just something that I don't think the game should be blamed (for).

"If there were any mistakes made, it was perhaps the way that I positioned my head – and that was incorrectly when trying to affect a tackle."

I'm not sure that's the best take...