My B-I-L does exactly the same thing.
If he sees any Pink inside of his Steak, it isn’t cooked enough. While I usually order my Steak Medium, I order it Medium Rare if we go out to eat just to see him squirm.
He also puts Catsup on everything, and I mean everything.
One of my older nephews put catsup on mashed potatoes. I got to thinking about it and it makes a little sense. He was just a toddler when he started.
In the film “Wheeler Dealers” James Garner’s character orders his steaks crunchy and keeps sending them back to be cooked more.