Both Union and League would do well to actively disavow "fight club is aspirational" schtick whenever possible.
I'm in the opposite camp. We've seen through alcohol prohibition or the war on drugs that saying something is bad and naughty isn't the solution. As someone with no dog in the fight, I can't see how society will have no problem with Boxing or UFC, but we draw the line here for "safety.
Asking AI gives me these rates brain related injuries;
A more recent analysis of bouts from 2000–2019 (428,904 total fights) found 84 brain-trauma fatalities, equating to about one death per 5,000 professional bout
In sanctioned mixed martial arts contests worldwide, 20 deaths have been recorded (and an additional nine in unregulated bouts) as of 2023
If I was Union or League, I wouldn't endorse it, but acknowledge that this will occur, so lets get the runit team to make it safer.
There's no need for the participants to start standing up and have a run up. Make the big boys start on the floor and get up, it'll reduce the level of force.
Get RunIt to tell a defender make a legitimate legal tackle i.e. wrapping and has to involves arms. No shoulder tackles.
Putting safeguards in there is the solution otherwise it'll just go underground and still happen.
It'll fizzle out in a year or two anyway when the next trendy thing takes over.