FWIW we got a "*NOTE:" added to our training manuals soon after Colgan 3407. "In the event of an actual stall, altitude loss is acceptable" or something similar. Lawyers would've had a field day with that had it been my company (I assume Colgan had similar profiles)...
"So let's see, you train pilots to NOT lose altitude, which is exactly what this crew tried to do, yet you are blaming the crew?"
"And your realized the error after this incident, you quickly added a * to your training manuals?"
"No more questions."
Game. Set. Match.
The entire industry trained, repeatedly, for "maneuvering stalls" (what they are called here) similar to what Colgan experienced, and in fact altitude loss is/was a CAUSE OF FAILURE on checkrides.