This sentiment goes too far in the opposite direction for me. Code that solves a problem is an asset. To carry your analogy forward, code is the concretization of the solution of the problem. The idea of the skyscraper is useless on its own and requires the concrete that materializes it. The skyscraper would become a lot less valuable if you removed the concrete...

Of course, you also don't make the skyscraper better by indefinitely adding concrete. A balance must be found with the right amount to be load bearing but not too much. Just like code.