"Why don't we just turn the whole goddamned thing into a wiki, and then tell them 'when you shoot yourself in the foot, don't come running to us'."

Because they will come running to you ANYWAY, and you won't be able to stop them. And then your bad day will be an even worse day, because they'll whine and whine until you've fixed their mess, or whine even more if you tell them you can't fix it.