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.
I’d posit that your well-loved cast iron looks even better than new. For me, moving off nonstick pans was about sustainability (and money waste, who wants to buy a 2 year subscription to cooking?), but I can’t get over how beautiful some cookware gets just from being used. The patinas on cast iron/carbon steel pans reflect the dedication of their owners to a craft, which I’ll take any day over a colorful pan whose surface flakes just from looking at it.