I think what you should have said was, "I'm glad I had the opportunity to exaggerate on this important topic." :)
I can't speak for the original poster, but I don't think it's much of an exaggeration. Children are certainly impressionable--our prime learning years are in our youth. And xtian beliefs are definitely unfounded and, when seen from a rationalist or atheist viewpoint as being equal to any other silly superstition, also ridiculous. Can you imagine if your child's school taught that it was a sin to wear blue shirts on Thursdays? Or that people who don't like chocolate are abominations? Or that before every meal, you should knock on the table twice, as a way to give thanks to Freyja, Norse goddess of fertility?
How, then, is that any different from teaching a child that it's wrong to eat pork, or that homosexuals are abominations, or that they can ask a god to alter the world on their behalf by praying? Or that bread and wine are the flesh and blood of a man? Or of a god that is simultaneously three different entities (son, father & holy spirit)?
The whole point of indoctrinating children at a young age with these beliefs is so that they won't think them ridiculous when they grow up.