While I see your point that all labor has value, skills can be significantly more or less involved to learn and master. There are labor jobs that require certification or ongoing licensure to perform and those that do not. There are roles that involve the health and safety of others and those that do not.

I think the skills involved between fast food and warehouse packing are probably pretty comparable overall, but a blanket statement of "all labor is equal" really doesn't hold true.

Someone else will be better at explaining the why but no, it doesn't matter. You can still see and do the things.

Maybe they were talking about twatter

Dab and press, don't rub. Dawn in cold water first dabbed on and soaked up with a towel, then hydrogen peroxide the same way for what's left had always worked for me.