There's an update buried at the bottom of the article. Ton Roosendaal tweeted[1] that they sent Blender a contract to enable monetization. I can see why he doesn't want to do it based on the principles of the Blender Foundation. Sounds to me like Youtube is holding these creator's content hostage because they don't want to put up ads.

He put the contract up for review as well: http://download.blender.org/institute/Contract%20between%20G...

[1] https://twitter.com/tonroosendaal/status/1009010581549060097