I've seen something a bit like that: moderators who would come down hard on people who ask a question, both in an old thread or a new one (because the first time they were told not to create new threads or not to necropost so they tried again, following the advice, in the opposite manner), by telling them "why can't you search the fucking forum 2 minutes before digging an old thread / creating a new thread, stupid; this has been answered multiple times: here, here and here; topic locked", and of course none of the links he gives does answer the specific problem the posters had and clearly specified, because the mod didn't spend the said 2 minutes reading the posters' questions and just stupidly copied the first search results in the rush he had to punish the intruders. So, when you hit the same problems as the posters, you are out of luck, because their questions were not answered before, and they will never be.
The result is ~10 relevant hits when you Google an error message with not a single useful solution.
I never understood it either. I mean, as a religion.
What is even sillier, is that as far as web forums are concerned, you have 50% of them which will go mad if you "necropost", and the other 50% which will go mad if you open a new thread when there is already an existing thread on the same topic (even buried), because these have the exact opposite written or unwritten rule. The latter ones love their 800 pages long topics; the former ones forbid you to follow up with a discussion even when it is the exact same topic, if the discussion stopped for a while.