I understand that I'm almost 7 years late on this topic, but I can indeed confirm that Grandmaster King is a Grandmaster. I took classes under a close friend of his, and I've also trained with Grandmaster King. He was there when I attended my first-degree black belt test. Unfortunately, due to COVID-19 this close friend of his, Master Eddie Brousseau had to shut down his dojang because he was not making enough money. I can't answer about the 17 styles, but I can confirm he is a Grandmaster. I hope this clears some things up about the situation.