Cook some bacon and then just use it as normal. These whole elaborate "seasoning" steps are ridiculous. I've never done a single one of them and fry up eggs in mine all the time .
Doesn't cast iron have issues with iron leaching? Not to mention though how much worse Non stick and any other forms are. I've only found ceramic to be better, but can't send it through high heats.
You almost certainly get enough in your diet without having to rely on cast-iron cookware. Is the iron that leaches out even particularly bioavailable? When we talk about iron in the diet we're really talking about iron as part a molecule, not just the raw element.
No, it doesn’t mess up your pan at all. We cook tomato sauces in our cast iron pan all the time and it’s totally fine. Besides, a new pan is like, $12.