I agree it's a poor demonstration-- he helps it the last bit of the way to the stall. But look at how much it pitches first...

Unfortunately there's two videos I found of the trim stall demonstration on youtube-- this one which shows most of it with a full cockpit view, and one which I think is a bit better technically but has the camera shaking everywhere.

See FAA AFM 4-12 for official training materials. https://www.faa.gov/regulations_policies/handbooks_manuals/a...