Anybody can think up a 'religon' on his computer and start solicitng funds. Is that a legitmate religon or a scam?
What is a legitimate religion? How can you tell people what they can or cannot believe? Holy inquisition at its finest.
Legitimate means a socially accepted body of believers that is officially recognised and legally registered in a given country.
State should have nothing to do with registering religions, because that's not its role. State should not tell people what they are or are not allowed to believe in and legitimize one religion but reject another.
Since our focus is Poland, how many believers are non-Christian? Satanism in Poland is not one of the registered denominations nor is Scientology.
Which is wrong, because state should not be poking its nose into religion whatsoever.