I'm not going to disagree, as I am neither Tier 1 nor LE nor anything else of anything.
One thing I can share is that, from Mike's description, it seemed like MOST, though not all, of what he shared and has developed into this class came not from his time in the Marines or in "America's premier special mission unit", but doing PSD work out of soft-skinned vehicles in what was probably the most dangerous place on Earth at that time.
All of these guys have their opinions, and it's not my place to say that Mike was "right" in anything that he said, really. But I will say that he does a great job of explaining how to do something and the why of it (as well as the why not of other techniques). That was the second class I took with Mike, having taken Covert Carry a year before. If you've never trained with Mike, well, you should. He really is very good.