Fun fact: Early in their history the UFC turned down a plan to have full contact stick fighting events because they felt that it was too violent.

https://dogbrothers.com/ufc-letter/

Who needs a stick when you can just stand behind podiums and take turns slapping each other for Dana White's pleasure?

Too violent for pay-per-view, not inherently too violent. The letters shows admiration for the intensity of stickfighting.

If scientists are going to clone a woolley mammoth then we may as well go full techno-dystopia and clone some sabretooth tigers to fight too.

I suspect underground competitions are already bloody enough.