They like steel and glass kitchenware only. I guess that makes me a crunchy dad (at least when it comes to the kitchen): with any type of plastic, we don't really know what it's really going to do to you long term. Might be nothing at all, but it might be lots of really bad things. But with steel and lead-free glass? It just sits there doing its job for decades on end, no leaching, no reacting, no bits of microplastic in the cooking.
If I saved up the money I spent on non-stick pans, I could've bought several sets of good steel ones, each of which will outlast me. Same goes for steel spatulas.