Matt Mullenweg was right when he said 'Learn JavaScript Deeply'

LOL. The problem is that those developing Gutenberg haven't actually learned JavaScript deeply enough. If they had, they would be using JSON instead of the nonsense of HTML comments.

This poor decision is all the more ironic when the REST API, which was added to core only relatively recently, itself uses JSON.

It would be nice if the New Year saw core developers be more consistent instead of engaging in such muddled thinking. But I am not holding my breath.