So is the point that sometimes good training means being less than absolutely safe? I would agree with that, but we have to assess whether the risk has any return of value. In my opinion, with so many other options, downrange photography...with a person down there, does not. Certain other training, I would assess on a case by case basis. I readily acknowledge that some training that is very practical may not allow a muzzle to always be pointed downrange and may include "sweeping" others (well, what some would consider a "sweep"). That is real world. Setting up next to the target? No thanks.
The drill in the photo can easily be performed without sweeping anyone with the muzzle.
(I'm neither supporting or criticizing the drill. This is just an observation about your statement in relation to the drill.)