Nevertheless, Arrow’s theory has provided the major ideological justification to oppose efforts to regulate markets. Collective bargaining, public spending on social programs, constraints on trade and other forms of welfare capitalist state intervention have come to be widely regarded as economically inefficient barriers which distort and retard the assumed movement of free markets towards general equilibrium.
The following piece is a succinct decoding of the fallacy.
https://www.bloomberg.com/view/articles/2017-03-09/the-misunderstanding-at-the-core-of-economics