Jay Honeck laid this down on his screen :
A TBM-850 is a very capable turboprop aircraft, and it was being flown by a
very experienced Angel Flight (like, 57 flights) pilot. Using the aircraft's
POH and the AWOS history, another pilot has determined that the TBM would've
needed something like 4200 feet to get airborne, given the tailwind.
Unfortunately, Rwy 30 is only 3900 feet long.

Do you think he didn't know this or felt he could T/O regardless?