Hey Timzsta, you're (not "your"!) showing evidence of being a little thin-skinned and prickly, old chap. With time you'll find that maturity brings the ability to recognise and accept or reject constructive criticism in the same spirit that it was intended.
You may possibly be more experienced than me, and you may be the best FI to ever walk on this Earth (or to fly above it), but I humbly suggest that, if a stude does not react correctly when prompted they need another demo rather than being told what to do with the controls. I'd also suggest that the correct speed should be a higher priority than the correct approach angle.
Bottom line: everyone learns at different rates and it's the duty of the teacher to use their experience to apply a technique that works for the particular student that you happen to be dealing with at the time. When teaching people to fly it's imperative to teach judgement, and this can not be taught by telling the stude how and when to move the controls.
HFD