Earlier quoted context omitted.
I think carbon steel is better than stainless. It can be seasoned to almost Teflon levels of non-stickness, just by burning some cooking oil, the seasoning is maintained by cooking, often comes pre-seasoned, is cheap (there’s no reason to buy an expensive carbon steel pan! Get one from a restaurant supplier)
So you eat burnt oil every time you cook?
The oil fills the pores of the metal and polymerizes. Subsequent layers cross-link with each other to develop the non-stick coating. It doesn't really 'come off' although I'm sure small amounts will occasionally. It doesn't contribute to flavor and it's not exactly toxic. Same deal as cast iron, details here. [1]
[1] https://www.lodgecastiron.com/cleaning-and-care/cast-iron/sc...