It's kinda like saying that capitalism is a ponzi scheme. You are told that capitalism is based on supply and demand; and that if your skills or product is in demand and you can meet supply, you will be rewarded. But this isn't the reality. People should also know about your skills/product. It's normally done through advertising and marketing.

Steemit is kinda like that. Since it's a decentralized platform, it's kind of a free-for-all country. In such a free-for-all country, you need to secure your advantages first.