There are a lot of assumptions baked into this statement. For example what does unskilled mean? Who gets to decide it? Would you consider an artist or a musician unskilled? A diplomat? Those people don’t code or perform surgery but most people would consider them skilled and those careers positive contributions to society.
Someone who is wealthy may not have skills as you describe it, but if they are investing their wealth in the stock market for example, it could be argued they have a much more outsized positive impact on society than the average person.