For the big stuck on pieces, you use a stainless steel chainmail scrubber. For cast iron pans you can scrub as hard as you can with that and you aren't hurting the pan. Try doing that on your aluminum, Teflon non-stick pan, or your nicely polished stainless steel pan and let me know how that goes (don't do this). For cleaning off oils and grease off cast iron, regular liquid dish soap (like Dawn) works great and is totally okay to use for cleaning cast iron.

For your cast iron, don't use lye based cleaners and don't put your cast iron in the dishwasher.

I recommend people use lye-based cleaners and put them in the dishwasher in a whim.

You can throw a cast iron pan off a fucking roof, leave it in a wet ditch for 2 years, it won't be harmed.

Quarter teaspoon of oil rubbed in, be back to cooking.

You can throw a cast iron pan off a fucking roof, leave it in a wet ditch for 2 years, it won’t be harmed. Quarter teaspoon of oil rubbed in, be back to cooking.

Sure but if you don't use lye and just use dish soap, then you can skip that step and you keep cooking.

You can throw a cast iron pan off a fucking roof, leave it in a wet ditch for 2 years, it won’t be harmed.

Well if you leave it in a wet ditch for years it would rust and pit eventually. It doesn't mean you couldn't regrind the surface to get it smooth again, then seasoning to get it back into cooking form.