In order to be Muslim, one needs only the following:
- Belief in Allah
- Belief that Muhammad pbuh is His messenger.
Anything else is local/cultural/temporary/optional/open to discussion and thus will not and cannot be considered as a fundamental condition to make a Muslim a Muslim.
So one should check if they truly believe in Allah. And they are good for this life and the life hereafter.
Minaret or a rag/towel/topi/hat for someone's head are trivial at best.
Its not the matter of WHAT is Islam and What is not. Its the matter of human rights that we are discussing and discrimination of human rights champions.
Is Cross a basic pillar of Christianity? Wait till someone bans the crosses in some country to hear the hibernating human rights champions wake up.
BTW, I personally am totally against forcing someone to wear hijab or topi but at the same time, I am totally agasint forcing someone to NOT wear hijab or topi. I dont discriminate in this but human rights champions do.
I am sure this can be struck down in Swiss courts and should be.