They don't seem to be taking that "must" very seriously.
It is purely a one-way street so far as the Muslims are concerned. “Democracy” and Islam are polar opposites, but with the use of guile and the Islamic technique of Taqqiyah, the very practice of democracy can be and is used to promote Shari’a law and Islamic hegemony.
Until the frog finally realizes the water is too hot, but can no longer jump out, because his flesh is already cooked.
Those fine old Lutheran churches in Denmark will make remarkable mosques, when the minaret towers are added at all four corners. The stained glass and the carved representations of Christ and the saints will have to be removed as well.