I would hazzard a guess that people brand them as dangerous due to their inability to recover from a spin. So if an inadvertent spin occurs during a brief moment of spatial disorientation, thats the end of the airframe and of course the pilot too if he fails to act quickly. The POH actually states in emergency procedures to activate the chute if a spin is encountered. I am also informed from a very reliable source that the chute was the only way for cirrus to obtain certification due to this very issue.
As Paul points out, you have been reliably misinformed. Cirrus built the plane to avoid spins and incorporate the parachute as a safety feature of last resort.
Now there are lots of performance singles out there that arent certified for spins but will at least recover and protect the pilot in a momentary lapse but unfortunately not this slippery performer.
Those performance singles
will not recover and protect the pilot.
Unless you know of some technology that imparts a sixth sense to the airplane!
Only an attentive and skilled pilot can do that. And only if there is sufficient altitude in which to effect the recovery.
Cheers
Rick