Professional flashes, with good batteries, have no problem with charging in 10 seconds, even when at full power, which is rarely needed. At 1/16 or 1/32 power, which is much more common, even the cheap Chinese ones have no issues with multiple sub second recycles, at least the two Yongnuos I have, and all the pricey Canon Speedlights I've ever used.
As for the Butteroo camera test, sure, they monkeyed it, it's just a matter of time before someone with both Batterizer and that camera model repeats the test and sees what's the issue, but I wouldn't criticize the 10 second interval. Be honest Dave, the CIPA standard you posted would be a lot more complicated to set up and automate. It would require at least three servos per camera, which would introduce unnecessary clutter in the test jig and would not be transparent to the viewer.
Yes, the test needs to be repeated and the camera examined for the shut down voltage, since there is obviously something horribly wrong with the design, but as I see it, the 10 second interval is the least important issue.
Model photography (fashion and stuff) in studio doesn't rely on battery operated flashes. They are supplied by mains.
That being said, I have several cameras, among which an otherwise quite decent Sony point and shoot that is, however, notoriously battery hungry, even when powered off. I also have an old Konica Minolta one I bought at a flee market for about $3 that works just fine. Hopefully the Batteroos I ordered a week ago will arrive soon. I still haven't received tracking details or shipping confirmation, but I'm giving them some slack due to all the holidays.