That's sad. I can't quite see how chefs are at risk so much.
Okay, picture a restaurant kitchen and the chefs. Close your eyes for a second and fix it in your mind.
I'm guessing, you've got something Gordon Ramsay like? Maybe a big important chef and some sous chefs who do have to get close to pass each other but it's a nice big space etc?
Then think about the reality. For every fine dining or even just moderate dining establishing that might, note, it's might not definitely, have such working conditions (which I'd still consider high risk), there are multiple lower end establishments particularly for takeaways. These kitchens are small, crowded, badly ventilated etc.
I honestly think that one of the biggest problems that Covid has exposed is how little many of us know about how other people live. Our books, movies and TV shows just don't truly show the reality of so many people's lives. It's a silly example, but I see it even in our little middle class village - when we do school fairs or village events etc, all those little takeaway shops remain open but they're not part of it. They don't get asked to sponsor things, their children don't go to this school (so I assume that means they all live somewhere else as it's a state school with admission almost exclusively by distance). So all these people who work in our village are nonetheless invisible to the vast bulk of the people who live in it.