Why would he be unhappy with it? He agreed his scale was flawed.
His comment about “flawed” had to do with under reporting strength/damage ratios, and it was a huge political (politically correct) fight to get number approaching 300 mph even discussed openly. He knew higher was not only possible, but likely. The technology to accurately measure 10 second bursts (not 3 second like was agreed to) didn’t exist at the time. It does now, and he was dead on right... they (NOAA) are underreporting on purpose.