No, this isn’t a cast iron thing. Using stainless pans, you can get nonstick effects that, in my experience, far outperform Teflon anyway. The process is called “spot seasoning.” I have cooked crispy, cheesy rice noodles with eggs with zero sticking.
I love my cast iron pans, but stainless is my daily go-to. Added bonus: use 100% copper wool to clean your stainless pan. The copper-coated wool at most grocery stores is problematic; you might get a few uses out of the coated garbage and then it starts shedding metal bits.
Thanks for the tip about preheating! I bought a set of Allclad mostly so I could go from stove to oven to finish, but haven’t bothered to learn how to correctly cook eggs in them (have a carbon steel crepe pan that is the designated egg pan, highly recommend). The rest of the reason for them is that they are nigh on unfuck-up-able.