I don't know if it's a result of internet forum culture, but whenever I've joined a religious forum I come away thinking that just about every negative stereotype of religious people has some truth to it. Sure, not every Christian is relatively uneducated, scientifically ignorant, believes their dreams are magical, lacking in critical thinking, believes in conspiracy theories even when they contradict each other, judgmental, self-righteous, bigoted, rude, close-minded, tribal, shallow, and just plain weird. But a heck of a lot of them are.....way more than in any other group I've ever wandered into.
The atheist/skeptic and science groups I've belonged to have an occasional case of some that now and then, but not in anything near the proportion as Christian groups, where all those things seem to be part of the baseline condition.
I don't think that's a coincidence.