Respectfully, I'd hate to rain on your parade but would like to emphasize this: Okinawan karate is way watered down nowadays as well. If interested, read one of my rather lengthy posts
here. This was the post in regards to efficacy of kata, etc.
I have trained for about year and a half at one dojo (no name will be mentioned) in Northen Tampa, which is home to Isshin-ryu style karate. They have two types of curriculums: one for kids (and teens) and another one for adults.
At this dojo, the kids (and teens) are learning kata and train for tournaments that take place twice or three times a year. They do not learn realistic self-defense techniques to help develop skills. That is what's wrong with Karate in general. You enter the dojo waiting room, you see the faces of soccer-moms eagerly waiting to take a snapshot of their child while they train and you understand why the kids will never evolve into true martial artists. This is simply not needed and it is not what they are paying for. Parents are paying for their children to go to tournaments, bring trophies home and collect belts along the way. And dojos do cater to what the market demands - that is to stay open.
Now, getting back to the thread, a true Okinawan karate is a hard work and a lot of sweat, bruises, sprained ankles, dislocated joints and a lot of hurting. The poster is saying something about dirty fighting, which is rather amusing because there is no such definition. When it comes to ending the fight, it is important to deliver a good strike at a vital point and do it swiftly because there may never be another chance.
If a powerfully delivered
tsuki to the neck is considered dirty in self-defense situation, then I suppose it is, but it is nothing special except it will probably kill the opponent. What about kick to the groin? There is nothing special to it unless it is a kick aimed at the lower right or lower left area of the pelvis where one kick could disrupt the flow of blood over femoral artery and break the pelvic bone. Is it a dirty kick? Not really!
Having said that, even these fundamental basics as properly delivered punches and kicks are not being taught at Okinawan karate dojos anymore. BTW I had a talk with Sensei who is Roku Dan and is a descendant of Sensei Mitchem, one of the several marines that trained in Okinawa under Soke Tatsuo Shimabuku and he knows the real stuff. He trained for almost 30 years but he is simply not teaching any of this to his students.