The subject is obviously a joke.
Before the alarmists continue on about over stressing the plane for the
next pilot, how many unexplained structural failures (or fatigue
failures) do you find in the accident database for 150s? Is this the
first you ever heard of someone doing mild acro in a 150/2? I would be
willing to bet that that many seasoned acro nuts here have performed a
maneuver not necessary for normal operation in a non-aerobatic airplane.
(maybe it was just a steep wingover)

Sure, it isn't smart, but unfortunately it is quite a common
characteristic of otherwise reasonably smart pilots.

Leave it at, it's dumb and you might get yourself killed.
Of course, plenty of people get themselves killed in acro rated airplanes.

Mike