My wife is a kindergarten teacher, and over the last four years there's been a push to 'play based learning', presumably resulting from the same kind of research mentioned in the article.
By and large it seems fine, though it doesn't alleviate some of the problems they mention; specifically my wife still feels the pressure to move through the curriculum, but it's a little less clear how. Part of the 'learning through play' initiative also pushes heavily on 'self guided learning', and while all of this seems great, there's not a lot of guidance given on how to execute. I think most of us would agree that it's better if the student is interested & wants to learn the subject, but there's no real help about what to do if the student /isn't/ interested. Presumably the teacher just forces the kid to learn what has to be learned, but all the material provided leans heavily on instructing teachers not to do that.
At any rate, this is mostly just typical of governments adopting something and not thinking through how to implement fully. Still, the impression I get from my wife & her colleagues is that the ideas are good (play-based learning) but it'd have been nice if there was better instruction on how to follow through.