I don't support banning things, so obviously I can't support the Swiss decision to ban minarets even though the hand wringing is amusing. As I understand it most Swiss nominal Muslims are from the largely secular European Muslim cultures of Bosnia and Albania in any case, so annoying them for no reason seems pointless at best and vindictive at worst.
It is also trivial, what is more likely to lead to the rise of Islamism- the building of minarets or mass immigration from countries where Islamism is a major force?
That said the whining from various Muslim nations is absurd given their own behaviour towards church building. Egypt has objected to the Swiss ban, this is the same country which has for many years prevented Coptic Christians from building new churches or even repairing existing ones. No doubt the Saudi royal family will threaten to withdraw their secret bank accounts from Switzerland too.
Still it is impressive how Swiss voters can simply override the wishes of their politicians through referenda.