Absolutely not. I assume the poster in question has been employed in their job for a period of time and is giving an accurate picture.

That behaviour, yelling and refusing to answer questions, is inappropriate in the workplace. By the sounds of it the poster is not confident to undertake the first action, raising the issue with the instructor themselves, which is understandable. They may also not be confident to report it to management due to fears for their career. If that’s the case a solution can be to employ union representation to advocate their position.

If the situation has been reported to management, and other reports have been submitted, but there is no action being done then that is a breach of workplace OH&S law which can be reported to the relevant body. It is already having a negative effect on the poster, they report the instructor’s behaviour makes them “extremely nervous”, “unconfident” and “exhausted”.

What else can that person do? They can resign and throw away their career in that company but that’s not going to solve the underlying problem, the poor behaviour of the instructor who will just keep acting poorly to new victims.

Just sitting there and copping yelling and insults is not an option.

Copping yelling and insults is certainly not acceptable, but before escalating it outside the company, raise the issue with the T & C Manager, directing his/her attention to ATSB Investigation Report #9704041, which covers a Bae146 which stalled at low altitude on departure from Cairns in 1997.
In particular, direct attention to the findings mentioned at para 1.2.1 - of an abrasive Captain who had taken on the persona of an "instructor" (though he was not), and with whom several co-pilots had requested not to fly.
The report is confined to events on the day, so does not cover what led up to the incident. Tensions between the pilots had commenced the preceding day and continued on the morning of departure.
Admittedly, the co-pilot was not the sharpest tool in the shed, but it was the captain's over-bearing attitude coupled with a lack of situational awareness (and from my personal knowledge of the person, a wrong sense of priorities) that nearly gave us our own 'Papa India' disaster. Despite the premature flap retraction and mis-set thrust, all the captain had to do was maintain the recommended pitch attitude and the aircraft would have gone nowhere near stalling - as later demonstrated many times in the simulator.

While you are at it, ask to review your training records and have an honest self-critique of your abilities. If you don't get a suitable response, and if you are confident that you are capable of reaching the required standard under a different instructor, by all means go to your union next. Fair Work Commission should only be your final stop, as once they receive a complaint it sets off a whole chain reaction which won't endear you to anyone in management.

Had a completely different experience latter half of 1966, Roy Goon CFI, personal instructor Clem Atkins, top notch, couldn't have been better.

One instructor at another Moorabbin school advised his student to give it up as he didn't have what it took to be a pilot, boss dressed the instructor down for giving the advice as he saw the student as a source of income.

Even in the military there were at times a clash of personalities, or what ever you want to call it for the two not to gel, not completely unknown for a student in pre wings training to go to the boss and ask for a different instructor, and for the boss to be sympathetic and arrange a swap. Don't ask you don't get.

You should not have to justify why you wish a change of trainer/checker. A simple request in writing that you and that person are incompatible and that it will negatively affect your performance wasting training hours as a result. Any school or airline I know of will facilitate this, if they don't, get a union rep to follow up. If the company wants further information as to why, you can explain it then after they have made the change. If you are just a poor student it will reflect in lack of future performance with other trainers, otherwise the change should result in progress. If all the trainers/checkers in the place are the same LEAVE, and report the situation to CASA, it is not the place you want to be. As said before any punishment or ill treatment for requesting a change is workplace bullying, get the union involved and it will stop very fast.