Hopefully Netflix is kept as far away from UFC as humanely possible. I am still bummed about the WWE Network closing down and stuff moving to Flix - I only watch occasionally and the live stuff has worked out ok. But they lack infra (every WWE show is it's own thing on Netflix with no umbrella category etc... And I think they call different years of Wrestlemania "seasons" - half-assed bush league shit) but the big gripe is loss of the awesome library of old stuff which is unlikely to ever return in the form it was in.
And that brings me to the subject at hand. UFC Fight Pass is another awesome library of old stuff across the board - mma promotions, grappling stuff, etc. That's why I pay for Fight Pass. If Flix gets their paws on UFC they would also find a way to kill off Fight Pass (much thanks for ESPN not demanding that to happen) and we would lose a lot of old stuff, and quite significant amount of it would never come back.
The situation is mostly comparable librarywise, so the fear of similar thing happening is quite legit.