You know, I don't ever recall hearing anything about Bob Hoover spinning the shrike. Every show I saw in person, and every video I have seen, he always kept a big margin above stall at all times. Maybe he did it while developing his act, but I haven't heard about it.
I'm also not convinced that spin characteristics of a Duchess are relatable to those of a Commander. Maybe, maybe not, but I wouldn't count on it.
And finally, I'm slightly rethinking my N690LS scenario, since a very knowledgeable Commander guy told me that their ADS-B data didn't show any sort of slow deceleration. It was almost instant.
That said, I do think there is a problem with stall/spin accidents in Commanders, and I think it is one which has gotten worse in recent years. Not because anything has changed with the airplane-- it clearly has not-- but because the pilots flying Commanders are coming up through a very different training process than those who flew them in the 1970s and 1980s. In the 70s and 80s, you still found a lot of ex-military owner/pilots who were very comfortable with stick and rudder-- guys who started out flying P51s and F86s and stuff like that. And the level of experience of the professional pilots of that era was higher, and more of those guys flew tailwheel and knew how to use the rudder.
Bruce is absolutely correct that the airplane is honest-- if everything is lined up and the ball is in the center, no problem. It's when it sneaks up on you and things aren't lined up that it's a problem.