alexv with the strong debunking.
Yes, completely agree.
The whole thing is OBVIOUSLY in a marketing-ladden direction... but that's not really the issue... the issue is if we can find anything valuable out of this.
Maybe one thing would be not to completely ignore the calves and barefoot training/running... as most of the people will do lately. The whole posterior chain is KING has become so obtuse in that people have become obsessed to only do stuff that increases upperleg strength and completely forget/treat it as unimportant - when it comes to the lower leg.
And then they go out on the field and apply a ton of extra power on a lower leg that is not used to that extra power. And then they wonder why they are injured.