You are right. Written comedy must be the toughest. I did laugh with one of posts, I just do not remember it right now.
Once a comedian was hired at a party in my home country of Peru. He had the people literally falling from their chairs and crawling with laughter. One of the best experiences in my life.
It's tough. Even the simple act of writing an intentionally long run on sentence to deliver some amusement might make someone who doesn't realize they're reading a joke think I don't even know how to write. Some of those grammar rules must bend at times.
I love comedy shows. I enjoy how they deal with hecklers. Hilarious when someone goes to a comedy show, and takes things seriously, almost personally, then gets angry and becomes annoying. Comedy can force the narcissistic types to break and show their true colors.