In a real sense, so is the other argument. It is not based on any real principal. It is literally reducing the argument to the absurd difference between the richest and the poorest.

I'm happy to see evidence on any studies that focus on optimal ratios of income for different people in an organization. Resting this on "relative income from the warehouse workers to the CEO" would need more than appeal to emotion.

I say all of this as someone that is all for taxing rich people.