Coincidentally I just watched that bad form video today. Painful to watch, really.

Although the business model is questionable, the physical training methods are generally tried and true... when they're being performed safely.

But isn't that the problem? The author even managed to get certified. Two days and $1000 and you can open your own 'box'. That doesn't mean all Crossfit is bad, and I wouldn't be surprised if most of the Crossfit trainers are pretty capable. It does mean that Crossfit itself probably isn't contributing anything good, and that the proper trainers are good trainers despite Crossfit, not because of it.

Saying 'Crossfit can be good, if done safe' isn't a good argument: replace the Crossfit part with anything else that can easily injure you and it sounds ridiculous. Even a newb like me can understand the bad form in this video, and it's from the Crossfit Olympics of all things. By the way, that guy mocking the Games got his entire YouTube channel removed by lawyers from Crossfit because of that very video.

With a proper trainer and good form you can do nearly every weird training programme and survive it, but that doesn't mean those programmes aren't dangerous.

When it comes to my own training, I am being taught the basics by a skilled trainer, but I'm still in th phase. If I have any questions, I'll shoot 'em your way, thanks!