Crocker's Rules, as I understand them, are about efficient conveyance of meaning without the extra baggage of social niceties. The are not about the ability to express unpopular views without social consequences which is where private messages or anonymity shine.
If you are concerned about observers misinterpreting the context you can always add a little [This post is under Crocker's Rules] tag somewhere.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.