I agree, Spicer is feeble minded and the people feeding him his intel and his talking points are equally inept. But the goal of his Hitler analogy wasn't to dismiss the Nazi's actions, the goal clearly was to inflate Assad's villainy because justifying their actions and their future actions was obviously the entire point of the press conference. The guy isn't pro-Nazi or a Holocaust denier (well maybe he is, but not based on this incident) he and his cohorts are just really, really, really bad at propaganda and debate and have almost no common sense.