yeah...it's nonsense.
or
it's a metaphor.
Space is chock full of resources and free energy.
So called 'environmental concerns' are non existent.
Put factories in space...make stuff. Metaphorical Gold.
But WAIT..there's more.
Some stuff can be made more easily in zero gee than it can be made on earth.
Some stuff (theoretically) can ONLY be made in Zero Gee.
but that's complete nonsense.
It'll never fly Orville.