I think the most obnoxious thing about this post (and I saw a Wikimedia employee point this out in the comments as well) is that it completely ignores the fact that Wikipedia is built on the MediaWiki platform and doesn't even attempt to address how their proposal could be realistically implemented from a development standpoint in coordination with the Wikimedia Engineering team and the community's ongoing product roadmap.

Maybe this is being a tad catty, and standing in the way of innovation in some respects but design led initiatives that don't take a close look at the world from other discipline's perspectives are usually doomed.