Exactly :D people today don't even realize Spring was born as a Java beans implementation and still implements much of JEE (e.g. https://docs.spring.io/spring-framework/reference/core/beans..., https://docs.spring.io/spring-framework/reference/core/valid...), but kept adding features on top (many of which were incorporated in JEE later, to their credit) to the point people don't even know that.

From Wikipedia: "The first version was written by Rod Johnson, who released the framework with the publication of his book Expert One-on-One J2EE Design and Development in October 2002"