Jeorg
deadmanjay
Uhm, yeah...No. Just no. The very nature of Wicca prevents this.
But the essence of Wicca does not control its followers. There are, in fact, those who do not even know the Wiccan Rede [An' it harm none, do what thee will. Blessed Be to thee.] but still claim to be of the religion. Wicca itself may prevent this, but followers forego it easily.
The essence of Wicca does control who is, and who is not Wiccan. It does control it's initiates to a degree, mostly with regard to the initiatory oaths and the requirement from those oaths to practice Wicca properly and preserve it as handed down from initiator to initiate etc.
You've also gotten the rede wrong. You've also neglected to understand that it is not a fundamental concept of Wicca.
Lots of people claim to be Wiccan, most of them are not.
Only initiates with valid initiatory lineage traceable to Gardner and who maintain and practice the core orthopraxy are Wiccan.
Most 'followers' of Wicca are not Wiccan, but misguided, idiots, fluffies or liars.