If they’re the owner or a dedicated employee and they’re passionate about the restaurant then i think it’s fine. As long as it’s a single location with a history.

in the same vein, there was one restaurant i used to go to where the owner would regularly show up, cook and serve food, and insult the customers in a charismatic way. He was really good at it too. If you told him to eat shit he’d tell you to fuck off and enjoy your food.

I completely agree with you for any chain tho.