The one I found the funniest/crziest is "Bug reports were blown off by saying that they didn't matter because the "scientists" just ran their simulation lots of times and took the average", because this is exactly how some scientists I know think.
This thinking is not limited to software. My father was by trade involved in building experimental apparatus ("hardware") for scientific experiments. Often they were designed by scientists themselves. He told me about absurd contraptions which never could measure what they were intended to measure, and extreme reluctance/defensiveness/arrogance he often met when trying to report it and give some feedback...