Similar, I'm told, especially in the lack of focus on neutral buoyancy during training and ignoring any issues associated with walking/crawling on or grabbing the bottom.
Perhaps
@Edward3c or
@Angelo Farina can tell us about the absense of neutral-buoyant training NOT in the US.
Well, I was working in a class last time in 1989, so my info can be a "a bit outdated".
When I was trained (years 1975-82) the main didactical tool was the ARO, a closed-circuit pure-oxygen rebreather. We used it mostly in the pool and the focus was ALL about neutral buoyancy with the ARO. Of course, in the standard trim for working with a chest-mounted rebreather, which is perfectly VERTICAL, not horizontal.
Other times, other devices, other purposes...
However, when the ARO was removed from our CMAS courses, around 1985, we replaced it with an horse-collar BCD, and the exercises about buoyancy control remained substantially the same (and, again, the standard equilibrium position was assumed to be VERTICAL).
But this happened just before I stopped working as an instructor, so I do not know how the situation evolved during the following 35 years.
I assume that at a certain point someone decided that the standard trim had to be changed from vertical to horizontal, as I see most divers nowadays are trained to always remain horizontal (also when it is obviously wrong, as inside a vertical pipe)...