I doubt it (no, not a flame here). If Hitler was just a figurehead, he would not have been able to screw up the German military in WW2. For example, the Luftwaffe was about to wage a very effective campaign of destroying RAF bases, but Hitler wanted revenge for the bombing of Berlin, so he changed the plans to bomb London. This led to the rallying of the then rag tag RAF which fought off the Luftwaffe, and still had their bases left intact.
Ditto for the invasion of the Soviet Union - the generals repeatedly warned him about the Russian winter and he refused to listen.
Hitler had Napoleon disease.
He quickly purged them after they were no longer needed to achieve power.
Then, the psychopath could proceed to ruin the world without obstruction from inside Germany.