I suppose it's a matter of what you're really trying to accomplish. Over a range of types, and conditions, you will find everything from will hardly indicate a stall at all while decsending, to drops a wing, and goes 'round a turn no matter what you do.
I cannot speak for the training standards being applied, but the standards for stall handling of any plane certified since about 1948 will be fairly equal, and well described (have a read of FAR part 23). The standards for dropping a wing are pretty clear, and I have certainly flown some types which did not meet the requirement - one was brand new!
It's a good thing for all pilots to have a feel of getting in and out of a stall, and a spin, but they are distinct maneuvers, and should be treated as such. If a spin recovery is necessary for a well entered stall, I'd snag the plane for a rigging check.
If the instructor is aggravating a stall, because that is the standard to which he should train, so be it - but it sounds odd to me.