Not sure this tracks for me. There are stand-up comedians who focus on their own lives and their own absurdities (like all of Bill Burr's recent stuff, or Maria Bamford, etc.). And there's tons of humor focusing on the absurdity of others going bak to Twain and beyond.

I think "humor" vs "comedy" is mainly about form: when it's on screen or live on stage we call it comedy, when it's prose on a page, more likely humor.