This includes Wicca.
I stumbled upon this Wiccan forum and I thought I'd just entered the Vatican with all the intolerance that assailed my brain! Plus the number of know-it-alls boggled the mind.
This is why if someone were invite me to join them for their Beltane or Christmas or Hannukah or whatever celebration, I just might, and I might even have a good time, but I ain't never joining your club.
This is why I'm a solitary mystic or Pagan who studies all religions and philosophies and incorporates what fits. I may never be able to be considered an adept, but at least I'm not constrained by any rules except the one we should all be follow. Treat each other with decency and courtesy, and don't be an asshole.
If someone who is interested in your particular philosophy approaches you with questions, it does NOT behoove you to act like a snob, mmmmkay?
If it's your way or the highway, I'm hitting the highway--to hell or wherever it may lead.
The one common threat I've found in all organized religion is intolerance. Which is why I despise organized religion.