Depends on how you define bad. Military and commercial dive training is all about safely getting a job done, most of which is surface supplied. They are not trained to care about gently floating over the bottom. However, they do know about diving physics, physiology, rescue, anticipating and analyzing risks, and safety (in addition to ships husbandry, salvage, burning, explosives, etc). All that I have worked with are also not likely to panic, ever. Lots of hours in black water also contributes.
Surface supplied divers also rarely develop low SAC rates in Scuba. Their gas supply is essentially unlimited, they work physically hard, and they have to breath deep to prevent CO2 buildup in their higher volume oral-nasal masks. It is a different skill-set.
One of the best diving supervisors (a US Navy Master Diver) I have ever known could suck a set of doubles dry faster than a gas turbine. However, I spent many days when my life was in his hands and never gave it a second thought.
All that said; there are always moron outliers. But in this case, it is not the fault of the training agency.
