Here's one big L-Libertarian that doesn't have a clue what you're talking about. Why in the world do you feel any need to "apologize" for someone who isn't even in your Party?
What business is it of yours, anyway? If he said he was a Zorastrianist*, would you "apologize in advance" "as a small l-libertarian"?
*For those who don't have a clue what a Zorastrianist is (*I* didn't, until I looked here):
Zorastraianism...followers of Zarathustra
I assume the whole issue of what his religion was came up because there was some box on a California Voter's Guide marked "religion." If he is indeed a Druid, it seems only logical to write that in.
The modern Druid religion seems benign. (Just like the modern Christian religion...now that Christians no longer have the Inquisition or witch trials.) Here's information about it, for people (like me) who didn't know much about it:
In short, I don't see anything to "apologize" for.
Mark (capital L-Libertarian)