On the face of it, that seems reasonable. However, it's like writing an introduction to Scrum by talking about Mike Cohn and not about Ken Schwaber, Ron Jeffries or Jeff Sutherland. It's especially surprising when it's from a thought leader.
Elisabeth has good contributions. Her book is an OK introduction. However, she didn't invent/discover the concept. The contributions by Bach and Bolton far exceed others.
There are other issues with Fowler's article.
In addition, Fowler and other agile thought leaders have routinely ignored testing from the likes of Kaner for decades.