I’m sure that after so many decades of “spin awareness/avoidance” training, many civilian flying instructors now have far less spin experience than the majority of those in the job years ago. It’s understandable that some might actually even shy away from the subject as much as possible.
Being RAF BFTS jet trained, I’m grateful that spinning was seen as nothing unusual. We needed that experience because we were expected to fly to the limits of the airframe (and aerobatics put students potentially closer to spinning when we reached the limits of our ability). Without that ingrained early full spin recovery training I certainly would have accidentally killed myself, at least on one occasion in a JP3A that I’ll never forget.