I don't buy the whole "the games are fixed" stuff.
There's a much more simple, and frankly believable, answer: that games are often dictated based on human (in)competences from referees.
If you want to tell me that the games are rigged, cool. I'll ask you in return to give me the papertrail that leads me to your proof. What a former athlete says on a podcast holds no weight for me.
Montana probably knows this well because we both follow combat sports: Any time there has been fights being fixed, or legitimate claims of fight fixing, the legislators could always find the breadscrumb trail.
The vast, vast majority of times when a fight felt fixed, it actually wasn't. It was just referee or judges being incompetent.
Want to know what a real example of "the games are fixed"? Google James Krause. The NBA ref who got caught for fucking around with the games, Tim Donaghy or whatever his name is, there was a ton of proof against him.