Your views are probably more extreme than mine, but I 100% agree that just leaving it to "common sense" won't solve anything at all. There needs to be some tangible change in policy / approach. I still think tempmutes in-game is a decent idea (if possible to implement), though it requires the host to be present to see what's going on. Or hosting games where the number of posts people can make is capped in some way, so people are forced to think before they post.
There are two types of people who make these sorts of plays: people who do it with self awareness and people who don't. So we have to make policies that make the plays strategically unviable and force you to think/reflect before you post.