It's not. The Muslim Brotherhood and other Islamist forces were much better at changing norms, insofar as they were responsible for it (as this was a trend throughout the Islamic world), than they were at forcing people to wear certain clothing.
It bears repeating that politics is downstream from culture, not the other way around. Nasser and other members of the army, mostly quite secular people, have been in charge of Egypt since the 1950s, and this did close to nothing to stem the tide of Islamization.
I don't think the hijab is mandatory in Egypt though.
It isn't, but de facto every Muslim woman wears it.
It's not. The Muslim Brotherhood and other Islamist forces were much better at changing norms, insofar as they were responsible for it (as this was a trend throughout the Islamic world), than they were at forcing people to wear certain clothing.
It bears repeating that politics is downstream from culture, not the other way around. Nasser and other members of the army, mostly quite secular people, have been in charge of Egypt since the 1950s, and this did close to nothing to stem the tide of Islamization.