But the constitution doesn't say: "all white land-owning men are created equal"
It said "all men are created equal". It took a long time to get to this point in human history and it's worth defending.
That was the declaration of Independence, not the Constitution. It has no force of law, but is certainly asperational.
Your elementary school social studies teacher failed you; the statement you referenced is written in the Declaration of Independence, not the US Constitution. The parent OP that I first replied to stated that "Owning money should allow you more representation than not owning money". This is a position not at all worth defending, and completely at odds with the concept of "all men are created equal".