My theory is that the MB, emboldened by their political win and by the islamists in the US State Department, CIA and WH, overplayed their hand in targeting Egyptian military leaders and secularists and anyone else an MB officio had a grudge against, for confiscation, trial, assassinations and executions
the MB does not play nice with other kids and never had any intention of sharing the sandbox
But Egypt is not Iran and the Egyptian military and educated upper and upper-middle classes, unlike the Shahs military and Iranian upper/mmiddle classes, did not abandon the country to psycho theocrat zealots or let themselves go gently (or ungently) into the night
If only the Wehrmacht did the same thing in 1933.