It's possible OP didn't realize what he was proposing would have a negative impact. Rather than assuming that, we could've just said something like: "Do NOT do that! Because of {these things}. And {these other things} will happen to you and other people."

There are plenty of ways to say politically incorrect things without being rude. One thing I like about HN (as opposed to reddit) is the information density -- it's higher because jokes and snark are frowned upon.