Point is: UFC pays poorly.
In my experience as a long time follower of several sports, once the data science people get in, a long leap forward happens shortly after. And no, not one of them, I'm a journalist.
Even if Dana pays ridiculously low, being a top UFC fighter (I'd say top 5 material, even if the athlete never gets there) at any division means big, big money coming at you from many potential ways.
And this flow of money will increase as the UFC exposure and audience keeps growing.
I believe the best gyms (ATT, AKK...) or teams around fighters will eventually bring in the nerds.