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.
Some people, like me, can’t possibly keep non-stick pans safe. I live on a sailboat, and the effort to keep non-stick pans (even ceramic) safe from damage is disproportionate to the advantages.
There are other cases, such as people who own birds. Overheating Teflon pans can result in PTFE toxicity in birds.