As a side note, it is an economic fallacy to suppose that salaries should directly reflect the value created by the worker. The price of labour, like any other price, is determined by supply and demand.

The word 'should' would need to be replaced (or added to) for the supposition to be fallacious. The (rejection of) 'should' does not follow from the 'is' in the next sentence without including an additional normative premise.