Full wings,
Operating from airports where you believe that there is inadequate weather reporting so you err on the side of caution by using a tailwind is IMHO perfectly justifiable. It’s no different to assessing the level of runway contaminant.
But in an airport with accurate weather reporting, are you going to use tailwind data for ZERO wind conditions, and contaminated runway data for a dry runway?
I was under the impression from Metabolix that they want to use the tailwind data ALL the time.
Mutt