I gave up the SCA about 15 years ago when my local group in Colorado started getting even wierder than normal.
However, since I have moved back to the area where we first started, the wife and I have considered going back, especially for the Heavy Weapons Fighting. As others have pointed out, it is a hell of a workout.
I saw an article on my Fox News App that spoke of the guy in the OP's post. I thought it was genius. As many know, it takes motivation to keep going to the gym and the trainers who came up with this LoTR-based workout had a great idea if it keeps people coming back.
I had a similar idea for what I wanted to call Warrior's Yoga, sort of a mix between Tai Chi and Yoga moves done to a mix of inspiring mood music aimed at getting guys (and appropriately-minded women) into the gym to stretch and "bond" in a Warrior's Mindset. I might have to revisit the idea.
The Professor