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.
Except the easiest thing in the world is just as the youtube guy said. If you use a cast iron or carbon steel, the seasoning doesnt really wash off as much, so you don’t have to re-season the thing every time you want to use it. My cast iron pans stay seasoned, even if I wash them with soap. SS doesn’t really have any benefit over carbon steel, and only a benefit over cast iron in that it’s lighter. If you want a lighter pan/wok, there’s little benefit over getting carbon steel.