The easiest way for advancing in the Nazi hierarchy was the initiation of anti-Jewish measures. The execution of the Final Solution gave the duo Himmler-Heydrich the opportunity to gain Hitler's support and amass a tremendous amount of power. By creating the a powerful S.S. organization, they created a state within a state, and imposed on the German people a system based on cruelty, and complete control of the individual by the S. S. State. In 1942 some Nazi circles realized the dangerous development and started, too late, to fight this development. Hans Frank, the legal adviser to Fuhrer, realized in 1942 that Himmler and his S.S. organization have hijacked the Nazi revolution, and started to warn the German people.
Brutality is never synonymous with strength.
But it was to late, Franks voice was a voice in the wilderness. Hitler dismissed him from his Party positions and dismissed him as a Reichsminister. Hitler did not accept to his resignation as governor-general of Poland, perhaps to counteract the growth of the Police State. Hitler himself was aware of this state of affairs, and it looks like that he purposely-nominated Heydrich as the Protector of Czechoslovakia, to break up the duo. Without Heydrich's brains Himmler was not threatening.