Frankly, it’d be short-sighted to not consider the Lawyers’ scrutiny of and input to any POH, in an effort to limit the airframe manufacturers exposure to litigation. You can Bet the lawyers ain’t Test Pilots either... and I reckon it’d be a fairly safe bet they wouldn’t give a toss about modifying a test pilots input either.
You don’t have to be ancient old to remember the near-death of GA Manufacturing in the USA as a consequence of ambulance-chasing, litigious lawyers.