smontanaro 

As pointed out on the (I think) linked post outside BF, if what you are trying to do is show someone an example how to do something, they will naively cut-n-paste your example, then complain that it doesn't work, because, of course, they are no longer valid BBCode tags. In this day and age, even pasting my bolded example will trip some people up because it will paste the bold attributes on some (many?) platforms. People will have to remember to "paste as plain text."

It's mostly just annoying that you can't simply create straightforward examples people can use. How long has BBCode been around? And the various forum tools which use it? And there's still no way to escape a square bracket (or any other character as far as I know).