I wouldn't pay much attention to what she's saying but she also does have some points.
Martial arts don't make you a fantastic fighter, they provide several key things to make you a far more effective fighter,
than you were.
1) Conditioning, meaning learned responses to stimulus and the strength to carry it out.
2) Removing doubt. If you don't know how to handle a situation you won't handle it well. Having a bad idea is better than no idea at all
3) Provide you with fighting experience
What that means is that a 12 year old studying since they could walk and knowing the same things as a person who is 25 won't be the same fighter as the 25 year old. A smaller woman with the same skills as a larger man (or even the same sized man) isn't as good a fighter as the man unless there is something wrong with the man. It's just life. Certain people are stronger, faster, have better reflexes, have higher pain thresholds etc etc.
Also the key thing to remember here is, it's not the dog in the fight that matters, it's the fight in the dog that does.
But, with training you get better than you were. If you go to a real dojo rather than a McDojo you will be quite effective but that doesn't mean you will be invincible.
You can't compare a particular art or style that doesn't provide those three things with ones that do and she does.
The classic example is the story of how white belts beat up black belts in a free for all fight.
Were the black belts from a McDojo?
Another is her ridicule of Segal giving Silva fighting tips and her comment that Silva has nothing to learn as he is better/great fighter.
That totally misses the basic fact that learning the correct technique is the important part, not who teaches it.
e.g. lets say a martial arts master, one that has done nothing but fight and learn the martial arts gets a debilitating sickness or becomes paralysed.
Oh well, he can't teach anyone anymore because he isn't a better fighter than them.
That's the idea she is pushing and that is so ludicrous I'm not even going to bother explaining why.
Segal is a high ranking martial artist in Akido and is acknowledged in Japan for it.
Just because he is a bad actor doesn't take that away from him.
To finish off, she rags on the martial arts but makes her living teaching them, knows the MMA fighters and knows that there are no untrained successful MMA fighters. So guess what? It seems that learning the martial arts works according to her own references.
Silva's martial arts background:
Although known primarily for his mastery of Muay Thai striking, Silva is also a Brazilian Jiu-Jitsu black belt, a rank he earned in 2006 from Antônio Rodrigo Nogueira who follows the Gracie Lineage through Carlson Gracie, like Murilo Bustamante and the Brazilian Top Team. He began martial arts training at the age of 13, training Tae Kwon Do and earning a black belt by the age of 18.[18] He is also a black belt in Judo,[18] a yellow rope in Capoeira[19] and is a professional boxer.
Take all that away and does anyone in their right mind think he'd be just as successful?