Vitalik Buterin Slams ‘Fake’ DeFi, Supports ETH-Based Algo Stablecoins

Buterin has criticized modern definition as being pretentiously centralized, misrepresenting the core principles of USDC product agriculture.

Ethereum founder Vitalik Buterin has questioned the legality of the popular USDC yield strategies, saying they do not follow the principles of true decentralized finance (DeFi).

His criticism was in response to crypto analyst C-Node, who said that most modern DeFi focuses on speculative discoveries rather than building a truly decentralized infrastructure.

A critique of modern DeFi.

C-node has challenged the crypto industry on social media, saying that unless users hold long cryptocurrency positions and seek financial services out of self-preservation, there is little reason to use DeFi.

Buterin supported this view, arguing that putting stablecoins like USDC into lending protocols like Aave doesn't count as true DeFi. “inb4 ‘muh USDC product', this is not DeFi,” he dismissed these strategies.

In his view, the underlying property remains under circular control, meaning that the protocol itself is decentralized, but the organization is essentially centralized.

Ethereum's developer suggested two frameworks for evaluating what should qualify as true DeFi. The first, which he described as “easy mode”, focuses on ETH-backed algorithmic stable coins. In this model, users can shift collateral risk to market makers through linked debt positions (CDPs) where assets are locked into mint stablecoins.

Although 99 percent of the liquidity is backed by CDP holders, negative algorithmic dollars are held elsewhere, a valuable feature of its ability to allocate proportionate risk to the market maker.

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The second or “hard mode” framework allows support for real-world assets (RWA), but only under strict conditions. According to Buterin, an algorithm backed by RWAs could still qualify as DeFi if a stablecoin is sufficiently overvalued to survive the collapse of various backing assets.

In this structure, the leverage ratio must be higher than the maximum share of any individual asset, which ensures that the system is solvent even if one part fails. This means that it acts as a buffer that distributes risk rather than concentrating it in centralized entities.

“I think we should be looking for more of that,” Buterin said, adding that the long-term goal should be to move away from the dollar as a unit of account to a different index.

Crypto community response

The comments were widely supported in the X crypto community, with one user calling it “excellent” and stating that the ETH-backed algorithmic stablecoin offers real risk reduction, instead of eliminating RWA diversification. Another commented, “True DeFi requires real risk innovation, not just USDC parking.”

However, there were also some concerns. For example, X user Kyle DH pointed out that algorithmic stablecoins haven't updated their design to address known issues, making them similar to money market funds, which have the same risk of “breaking the buck” as TerraUSD and LUNA have seen in the past. He added that RWA support needs to be carefully multiplied, warning that highly correlated assets or black swan events could still trigger a stable coin collapse.