My name is Burke, and I'm the one who researched and wrote that post. I think maybe the part about the MVVM is a bit misleading, and that's my fault.
Kendo UI MVVM in it's current incarnation will be supported and developed further. Nothing will change there. I was referring to integrations like Angular 2 and React. Within the context of these frameworks, the Kendo UI MVVM is redundant or necessary, so there is no point in us providing another binding framework when the framework within which Kendo UI is used already contains all of this functionality.
I hope this helps clarify your question. Our vanilla MVVM isn't going anywhere since all of Kendo UI depends on it very heavily.
Feel free to contact me directly if you have any further questions: email@example.com.