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.
Yeah plus when cooking some foods in stainless (such as meat) you want some sticking so you can build a fond which you then deglaze to make a pan sauce. Carbon steel is less ideal for this because the seasoning will react with acids such as vinegars, wines, or citrus which are all common ingredients in pan sauces. While a well-seasoned carbon steel pan can survive a deglaze with vinegar the dissolved seasoning can ruin the flavour of your pan sauce.