Ha, yeah... to be honest, he's wrong. For the record, I'm a big fan of Shorin Ryu... it's a fantastic system, powerful, direct, effective, strong, and more. "Brutal"? Eh... what I do is more brutal. "Street level style of defence"? Not any modern, Western streets, no. I'm not saying he's lying... I'm sure he believes what he said.... but it's again more of a marketing speech. And, honestly, it's a good thing that it's not really a "brutal street level style of defence"... because brutal tends to be overkill, which takes you from "defence" to "assault". So it's a great system... it has many, many benefits... and is certainly full of very applicable principles and mechanics (once again, I think Shorin Ryu, along with many of the Okinawan systems, is fantastic, very down-to-earth in it's approach, no mess, no fuss... kinda love it)... but an objective viewpoint can be beneficial. I certainly agree with your instructor about going in with an open mind, of course... I'd say that applies to all arts.
Well, that's your opinion, I guess. I'm sure you think the world of your art, but applying the knowledge gained honestly depends on each individual, and certainly even more so on the instructor's skill level. Considering that my sensei is one of Sensei Neil Stolsmark's senior students, I have no need to consider your opinion and can be assured that I am in the right place. Thank you for your concern.