Research shows that the 4% rule has a 13% risk of failure within 30 years. For early retirement, with a likely longer timeframe, that risk grows higher.

A safer method that also lets you spend more is the so-called Guardrails Approach: https://medium.com/financial-strategy/your-single-best-way-to-avoid-running-out-of-money-in-retirement-a9793e0eb5cd.