They said "leading innovative framework", and innovative is the key word. The biggest player is almost never innovating, they are usually performing some kind of undeserved market capture.
React isn't innovating, it's just improving what it already does, but it doesn't do it in a new way.
That makes it stable, and a safe choice for devs. But yeah indeed like the article says, it kind of stagnates innovation in the ecosystem. But yeah I guess that is because React is usually "good enough" in most cases. Not enough reason to use something else.
