I can see Bill Burr's angle - just own up to what's yours, be honest about your own shortcomings and move on with life. But everyone handles negative emotions differently, often in spectacularly unproductive and defensive ways. Which might help explain the abundance of stand-up comedian talent in the world today :P
My point, shame has always been useful, at least for me. Feeling ashamed is a sign of knowing I can be doing better, and it generally motivates to do better. Its not easy. But, why do we draw lines that shouldn't be crossed on anything that might make us feel this.
You shouldn't call a smelly apartment smelly, because someone might feel embarrassed, even if you are not trying to be a dick. For instance, the author researches and publishes an article about a popular course and the people offering it and gets called an asshole for one sentence without any judgemental qualifiers, ignoring everything else in the article.