“...it’s a secretive, cloistered religion and its adherents seem to like it that way.”
First of all, on a post somewhere you stated that you weren’t anti-Catholic. This post of yours could have fooled me about that.
Secondly, what you have posted is your opinion, obviously, but that does not make it true. And it isn’t true.
The very idea of baptismal regeneration is a type of mysticism which other Christians do not share.
And yes, I agree with you, all this is just my opinion.