FWIW my instructor taught me if I went into a spin to just let go of the controls if I did nothing else and if there was sufficient altitude the aircraft would recover itself since a spin is an induced maneuver that the aircraft has to be forced into (full aft yoke and full rudder).
I went on to fly Army helicopters so fixed wing was left behind but was I taught right about spins?
Anyway, a sad moment and prayers for the pilot and family members. Sickening to watch in fact.
That’s true with most airplanes. They are designed to be stable. It’s not necesarily true abour aerobatic planes where stability is undesirable.
Your statement about letting go is true if you have quite a bit of altitude and the aircraft has a lot of positive dynamic stability.
You bring up a point that has been debated in general aviation training for years. Teach spins? Required for flight instructors, but not private or commercial pilots. One school of thought is if the pilots are trained thoroughly to recognize and recover from a stall, they will never spin.
If a student asks me to show them a spin, I say no. We can do spin training, but we are not going to do one aerobatic manuever and say that training was given.