A Nony Mouse has lots of strong opinions about the non-problem that jack stall represents. Of course, he is wrong! If he took that marginal machine up to altitude, he could stall in simple maneuvers, and he would have chocolate brown pants instead. He doesn't know how to tell the severity of his maneuver, since no means is provided. Also, the myth that vibration must increase prior to blade stall is as dead as a dodo with today's helicopters.
We should take jack stall seriously, the number of aircraft that flip upside down and crash because of jack stall is small but significant, as is the testimony of those who survived it in spite of the cool assurances of those apologists like Mouse.
What precisely is wrong with expecting the hydraulics to be strong enough to allow the pilot to do his job?