If you are doing nothing illegal or harm what is the big deal? this is really ridiculous, with the Internet you could baptize millions of folks. Oh, just doing it is a harmless little play act with no significance whatsoever. It's the recording of the act in some database that I object to.
I don't want my name associated with this sham religion for any reason whatsoever, and after I'm dead, I'll have no say in the matter. And that's a big deal to me.
In this age of "High Technology" they could get your name a number of ways.
As long as ther not asking for your social security number trying to obtain credit in your name or doing something illegal there is not much you could do with anybody having your name.