What Would a Thanos Snap do to the Economy?

The justification was that this was necessary to restore balance to a universe that was overpopulated and putting too much of a drain on resources.  Now instantly hazing half of the universe, is a bit extreme, but…  When the same world can’t go a week without some news article telling us that global climate catastrophe is inevitable, natural resources are running dry, or that if everybody lived like the average American we would need 4 Earths to sustain them it starts to sound like we should hear this Thanos guy out.