That was all per my instructor rating course of 20 years ago.
and yet an engine failure should never have such a tragic ending.
Now we have this in the Part 61 Manual of Standards for required stall training. We also have a new, unique to Australia, definition of aerobatics which would most likely encompass that exercise. So, only those taught by instructors with spin/aerobatic training endorsements are likely to get the mandated training.