One day, about 20 years ago, I was walking along the road to Mass, and looking down, I spied a piece of post card with printing on it. It was offering the opportunity to renounce Baptism, promoted by the Raelians.
Very disturbed, I took it to show to the PP, who also happened to be the Vicar General. He merely laughed. (He later left to marry and father a child and become a “marriage-celebrant” and funeral director.)
So this is not so new. But I have never heard of anyone actually talking the step. The Raelians used to attend the regular local market; maybe still do, cors’ I’m gone from there.
I would have thought Italians too indifferent to religion to bother, because to do so would actually take effort. Then again Satanism is a thing in Italy.