And then there's the opinion of UFC heavyweight Matt Mitrione, who not only objects to Fox competing with women, but sees Fox's pursuit as "sociopathic."
That was just one of the choice terms Mitrione used while discussing his feelings on the matter during Monday's edition of The MMA Hour. During his segment of "The Mitrione Minute," a brief interlude in which he gives his unabashed thoughts on various subjects, Mitrione -- appearing via Skype from a bar "somewhere in Europe," where he was celebrating his UFC on FUEL 9 knockout of Phil De Fries -- voluntarily unleashed on Fox, unprompted by any questions.
He began with a story mentioning that he watched the classic film "The Silence of the Lambs" last week, and likened Fox to the film's antagonist, serial killer Jame Gumb, who went by the nickname "Buffalo Bill."
"Maybe instead of being 'the Queen of Swords,' Fallon Fox should consider being "The King of the Buffalos," he said.
Repeatedly referring to Fox as "he" and "him," Mitrione said after viewing Fox's fight videos, he hadn't "seen a man beat a woman like that since Chris Brown beat Rihanna. That is exceptional how he just beats innocent, unknowing women like that. Incredible."
After telling another joke, host Ariel Helwani asked Mitrione, "Why do you hate Fallon Fox so much, and why do you keep calling she a 'he'?"
"Because she's not a he. He's a he," he said. "He's chromosomally a man. He had a gender change, not a sex change. He's still a man. He was a man for 31 years. Thirty-one years. That's a couple years younger than I am. He's a man. Six years of taking performance de-hancing drugs, you think is going to change all that? That's ridiculous.
"That is a lying, sick, sociopathic, disgusting freak," he continued. "And I mean that. Because you lied on your license to beat up women. That's disgusting. You should be embarrassed yourself. And the fact that Florida licensed him because California licensed him or whoever the hell did it, it's an embarrassment to us as fighters, as a sport, and we all should protest that. The woman that's fighting him, props to you. I hope you beat his ass, and I hope he gets blackballed and never fights again, because that's disgusting and I'm appalled by that."
It was then mentioned by Helwani that Mitrione, who is usually a light-hearted jokester, had just "taken a turn to serious town," but Mitrione insisted it was for good reason.
"I'm glad I could make fun of him a little bit because he's obviously got some mental issues and wants to beat up on women," he said.