Greenwashing and the criticism of ESG

A serious education on ESG has to take its critics seriously. The approach faces real, well-argued objections — and ignoring them leaves you vulnerable to marketing.

Greenwashing

Greenwashing is when a company or fund presents itself as more environmentally or socially responsible than it actually is. Examples:

• A fund named "sustainable" that quietly holds the same companies as a normal index fund.
• Glossy sustainability reports that highlight a recycling programme while ignoring the firm's core emissions.
• Vague pledges ("net zero by 2050") with no near-term action.

Regulators have started cracking down — the EU's SFDR disclosure rules and various anti-greenwashing actions aim to make claims verifiable.

Inconsistent ratings

A landmark problem: the major rating agencies frequently disagree about the same company. Studies have found the correlation between providers' ESG scores to be low — far lower than the near-perfect agreement between credit-rating agencies on the same bond. The reasons:

• They measure different things (risk vs impact).
• They choose different indicators and weight them differently.
• They infer missing data in different ways.

If two respected agencies can rate the same firm "leader" and "laggard", a single score cannot be treated as objective truth.

Other honest criticisms

• Performance is contested. Whether ESG investing helps, hurts, or makes no difference to returns is genuinely unsettled; the evidence is mixed and period-dependent.
• Definition creep. "ESG" stretches across so many issues that it can mean almost anything, which makes it easy to game.
• Political backlash. ESG has become politically charged, with critics arguing fund managers should focus only on returns, and others arguing the framework is too weak to drive real change.

The honest conclusion: ESG is a useful lens, not a verdict. Use the data, distrust the single number, and read the underlying methodology.