Yeah, I thought it was odd also. Especially since, as you pointed out, it was their 1st and 2nd posts here. Spammers for Spagnuolo? (no offense meant to Marc, who seems like a nice guy, on camera at least)
Aside from all that, I just think this is one of the silliest techniques ever. Noisy, dusty, completely skill-free, will take you many times longer than hand planing and leave a terrible surface. Why oh why???