I have to agree with everything Rick said. FMJ can be very effective. People seem to have conveniently omitted the fact that all bullets tumble and many fragment. Assuming a FMJ bullet will simply pass through and leave a small hole is a gross over symplification. Furthermore, some non FMJ bullets offer little or no expansion in many cases. Shot placement is always the key. Yes, premium hunting bullets offer better transfer of energy under most conditions, but they are certainly not golden BBs. To me it makes sense for hunters to be educated in the facts and allowed to choose the best options.
Others have pointed out that the arbitrary rules in place often make little sense. Minimum bullet diameter says nothing about muzzle energy. Alberta recently eliminated its long standing overall cartridge length rule which was equally useless. Perhaps all the arbitrary regulations could be eliminated entirely and the hunter training could focus instead on energy requirements, bullet options and real life experiences with various caliber/bullet/cartridge options.