Yeah, her rant was a bit much. Anybody who's that emotional about their airplane shouldn't be leasing it to a flying club. Yes, acro in a normal category airplane is a bad idea, mainly because if you screw up you can easily overstress or overspeed the plane, but that doesn't warrant a teardown solely because it's been upside down, a properly executed aileron or barrel roll is a very benign maneuver, not nearly as hard on the plane as many student landings. But hey, she got the wing spar AD done for free, no?
Several factual errors too, when she was talking about bank angles and the definition of aerobatics.