before landing,
if the AS350 had operating RPM the pilot should have brought it to a hover
Show me that in "black and white" and I will agree with you. i.e. the statement in the approved RFM.
BTW if you check the RFM of most EC products under Minimum Flight Crew and the local NAA definition of "flight" you can only use a pilot. Unfortunately the statements are not uniform across models of the same type!
As Tuk Tuk sez - 350's do not decide to come apart as a matter of course. There is a mechanical problem.