Most people learn how to make a fist, throw a punch, execute certain blocks through traditional Karate among other things, all part of self defense. Think the article is inaccurate.
Evenflow---I agree, but I think what Mann would say in response to you is that, well sure, you learn blocking/punching/kicking in traditional karate but what you don't learn is how to
fight---how to put the striking components together to protect yourself in response to an attacker's physical aggression. And it's true that not all dojos/dojangs emphasize the use of striking weapons in a coordinated effective way to incapacite an attacker as soon as possible, at least enough to get away safely from the situation. Mann's would put it this way: traditional MAs, by their very nature, equip you to become not martial artists but, in effect, martial arts
actors, able to create the illusion of effective fighting skills under choreographed conditions where no real danger exists, but hopeless in the brutal conditions of unscripted violence. And it's true, many people who train in the MAs are limited in that way---
but not because of the inherent content of traditional MAs. What's at fault is not karate, nor TKD, nor [fill in favorite maligned martial art] but the way those people have trained. If you train right, you learn not only how to throw a punch or deliver a kick, but how to force an unwilling opponent to comply with your defensive strategy so that you can actually
deliver those tools effectively.
The missing link between that level of skill and the MAist is, according to a lot of knowledgeable people (many of them on this board), the kind of instruction that is offered at too many MA schools. Mann would have done far better to aim his criticism not at karate itself but at programs which claim to teach karate never cover the basics of effective self-defense against an untrained antagonist who is nonetheless quite used to, and comfortable with, a level of violence that would be scary to even experienced MAists, who tend to be fairly normal people. There's plenty to criticize in that directlon---but what Mann does instead is something like blame the car itself for an accident caused by a careless driver... it's not a perfect analogy but the two cases do have something in common.