I liked his cooking shows, too, and will miss him. Let me offer some background that might suprise you.
Justin made his living as a "Cajun" humorist for many years, but he is roundly despised by many Cajuns because:
1. He was only half Cajun; as I recall his mother.
2. His "Cajun" jokes were all about how stupid the Cajuns are. Such jokes were, in pre-PC times, referred to generically as Polish Jokes. The Cajuns didn't appreciate such jokes any more than the Poles did.
3. His fractured English, tortured grammar, and mispronumciations don't much reflect Cajun locutions. In fact, he had an advanced degree in Industrial Engineering. He spent WW II as an industrial safety engineer in war plants in the north (I think around Detroit.) This was the genesis of all the belt-plus-suspenders jokes. He was way too well educated to speak in the way he presented as "Cajun."
I read all this while I was waiting for my wife to get ready to go out for dinner while we were staying at a nice B&B in New Iberia about 15 years ago. They had a small library in the sitting room, and I pulled down a book on "Cajun Humor" by a professor of English at LSU. (Don't remember the exact title or the author's name; it was probably written in the early 1970's.) A whole chapter devoted to Justin caught my eye, and it sure wasn't what I had expected to read.
Anyway, we outsiders will miss him, his cooking and his humor, but I'm afraid a lot of Bud Lites are being lifted tonight in southern Louisiana in celebration - or at least in relief.