"How much am I getting paid?"
"It's unskilled labour, so not much."
"Then I'll do something else that pays more."
"But then this won't get done!"
"You can do it yourself."
"I'm too important for this!"
"So the work is not important?"
"It's very important, it needs to be done or we'll be in shit up to our necks!"
"So pay me as much as this is important."
"I won't, it's just unskilled labour. WHY DOES NOBODY WANT TO WORK ANYMORE?"
If we're taking about making the till scanner in the shop go beep, yeah, that doesn't take extensive training and can be done by the next hungover 16 year old who stumbles in off the street. I've been that 16 year old, it was great.
This image is daft, assuming the other trades are unskilled. They're undesirable, sure, but you can't do them with 15 mins of training and another hungover moron in the back office "supervising".