The Islamist conception of democracy is basically as you described it: tyranny of the majority. As soon as they take over, they'll vote to remove women's rights, establish Muslim male superiority, curb the rights of non-Muslims, etc. If you complain, they'll retort that they're democratically elected and it's all democracy at work. This is why promoting democracy in the form of ballot boxes alone is bloody stupid, it has to come with respect for and acceptance of basic human rights.
Apparently, the jihadis (who've never liked the ikhwanis btw) are pissed at the failure of democracy in Egypt. This is just absurd when you consider what type of society ISIS supporters/fighters would like
![Roll Eyes](https://www.councilofexmuslims.com/Smileys/custom/rolleyes.gif)
He's basically saying the shari'ah should be implemented via elections instead of through jihad.