Looks like the FAA used the Biffle crash to do something they’d wanted to do for a while. Do I think operating a dispose-a-jet SP is dangerous? Absolutely. Is operating a CJ-series or equivalent SP more dangerous than crew? Unquestionably (having done both a good bit). Is it disingenuous to use a crash where the pilot didn’t hold the SPE and was operating illegally from engine start onwards towards getting rid of the SPE? FAA says no.