Stability in aeronautics is the tendency for an airplane to remain in equilibrium without control inputs. A helicopter is unstable, a Cessna is very stable. Comfort is a different metric. You can have a comfortable helicopter ride even though the aircraft is unstable. Comfort is also subjective, while stability is not.
To be clear: you are being downvoted because your grandparent comment specifically said "aerodynamically unstable". That's why everyone thinks it's so clear in context that your parent comment was referring to the technical, aeronautical meaning of "stable".
True, but we were specifically discussing aerodynamic stability and how it might affect safety, training, and regulation. The quality of the ride is a separate issue.
