[Upgrayyed_U]

The referenced article is five years old, so of course it's going to miss some of the biggest trends of the last decade. They Are Billions and Northgard were both released on Steam sometime after this article was written.

The author also made it a point to narrowly define an RTS game as "one that involves base building and/or management, resource gathering, unit production, and semi-autonomous combat, all conducted in real time (rather than being turn-based), for the purpose of gaining/maintaining control over strategic points on a map (such as the resources and command centers)," which leaves MOBAs out of the discussion.

I think the author succeeded in his goal of providing a light history of the RTS genre during its peak years (early 90s to mid 2010s). The criticisms you have may be valid, but they are largely outside of the article's scope.