The author mentioned that UML peaked in 2000. I started a job in the IBM software group three years later, just a couple of months after IBM acquired Rational.

The author mentioned that UML peaked in 2000. I started a job in the IBM software group three years later, just a couple of months after IBM acquired Rational. I don't recall anyone using UML during my time at IBM, even though we had free access to the entire Rational suite. We did eventually use Eclipse Modeling Framework for modeling and code-gen, but not through visual UML diagramming. It's fascinating that UML lost relevance so quickly. Maybe the fact that it was mostly an offline part of the developer workflow, i.e. people didn't commonly check UML diagrams into source control and use them as part of code-gen at build time, meant that it was easy to stop using it.