100% on the blog post, but as for the comments here: Don't listen to the naysayers.
WordPress is crazy popular and rightfully so, already powering 40%+ of the whole web, like TechCrunch and the New York Times. And thanks to Gutenberg and especially the newly launched Full Site Editing, this number is gonna go up even more.
Anyone who's not using it is missing out big time.
PS: See also https://rakhim.org/honestly-undefined/19/