But you may be missing the point, Z.
If the stalls practised during normal training can constitute "aerobatic manoeuvres" as defined in Part 61, a number of regulatory consequences follow.
For example, do all flying instructors have an aerobatic endorsement?
During training, I did lots of stalls that involved "abrupt changes of speed, direction, angle of bank or angle of pitch." The instructor made sure of that, presumably for a reason.