According to the FAA ACS for multi engine instruction and check rides, shutting down and feathering an engine is recommended to have all securing tasks completed before going below 3000ft AGL. If unable to do so then simulation of engine failure is called for. That includes checking airplane performance with one engine out to verify it is possible to shut one down and still meet the 3000ft AGL recommendation. My ME instructor actually demonstrated a shutdown while we were over an airport in case it did not restart ( it did restart) . When I did my check ride the examiner did not have me shut one down, just did engine out simulations. Did my ride in a Seneca 1 which has a 3600ft single engine ceiling. The turbine equipment I have trained for had simulators for training so demonstrating engine shutdowns and restarts was a non-event. I think the instructor in this case goofed!