Lu,
You have argued this and said this many times before:
"Ask the following: Since the Robinson helicopters are restricted from sideslip and out-of-trim flight can the R22 and R44 meet the requirements of the Certification Requirements for Normal Category Rotorcraft which require demonstration of both to include 90-degree sideslip and 10-degree out of trim."
Consider also that helicopters (as well as other aicraft) are restricted from flying faster than Vne, yet there are several regulations that require flight testing (and thus demonstrating that such is doable) beyond this limiting speed (ie 27.143(e)(2) for power-off controllability). Just because one is not allowed to operate regularly in a given condition doesn't mean that such flight it not demonstrable.
I don't have the energy anymore to debate your other points
