Schoenbohm's conviction didn't have anything to do with ham radio either. Both his and Mitnick's, though, were related to illegal use of telecommunications facilities. Since that's the FCC's area of jurisdiction, it does make some sense. The FCC's policy for many years has been to revoke all licenses, in all services, held by someone whose conduct justifies revocation of any of them; the actions in these cases seems consistent to me.