Clinton,
With that background, I agree that if the current flight manual – as defined in the current regulations - continues to include the recommendation you quoted, I would comply with that recommendation in the operation of that – repeat that - aircraft.
Don't you think that if one manufacturer deams it unsafe to undertake a certain procedure in his equipment, that it would be prudent for other operators to err on the side of safety by not doing a similar procedure in his (possibly) different, but similar make of aircraft?
Or should the operator be forced to undertake that procedure ... because it's not specifically forbidden in the manual?