Capitalism is the ideology that puts increase of the capital as the number one goal. It's usually is the meta strategy to make more and more goods.

To rephrase, if you do something else, it's gonna be less effective at multiplying the total wealth of society. And it might not always be a wrong thing to do, but the benefits need to outweigh the costs of scaling slower.

So, it's not wrong. Socialists often think about having a fair share of the cake instead of thinking how to make the cake bigger.