Don't ask people for their motives if you are only asking so that you can shit on their motives. Normally when I see someone asking someone else, "Why did you do that?" I interpret the statement to come from a place of, "I'm already about to start making negative judgments about you, this is the last chance for you to offer a plausible excuse for your behavior before I start firing."
If this is in fact the dynamic, then no one is incentivised to give you their actual reasons for things.
In light of reading through Raemon's shortform feed, I'm making my own. Here will be smaller ideas that are on my mind.