What is Reddit's opinion of Inverted Edge Tactics: How to cut someone off of you?

From 3.5 billion Reddit comments

"Work out so you will be the hardest one anyone has ever tried to kill..." Tim Kennedy

Here's a blog with a review of ONE system from back in 2008 and a list of other instructors with very similar programs, as you can see, the knowledge is so common people questioned if this was just someone else repackaging it.

https://weaselcraft.blogspot.ca/2008/09/new-dvd-review-inverted-edge-tactics.html

Here's an ebook and review pointing out its not "knife fighting" and its for average people looking for SD.

https://www.amazon.com/Inverted-Edge-Tactics-How-someone-ebook/dp/B01FWU09EE

The instructor in this one makes the point a non locking leatherman blade is fine. That's almost 10 year old info. Keeping in mind all the other people named have been teaching it even longer, you clearly aren't even close to trained enough to be giving advice. So your only option is to make fun of the trained, good job uniformed soft guy.