I don't know if that post should be taken very seriously. When I first saw it, I was like "what the??" But then I saw it was basically a very mean paid ad. On the one hand, it may have caused some damage to WP's reputation. On the other hand, WP's market share keeps growing for many reasons and Storyblok is barely a blip on the market share landscape.

BTW, in conversations I've been having recently with people from the Jamstack community (Storyblok can be considered part of that ecosystem), I'm seeing that the discourse is shifting away from "WP sucks! Boooo WP!" to "Actually, WP is a top-notch CMS that can't be ignored, and we need to see how we can work with it."