If it's a joke, it's a very subtle one...
Frankly, I don't think the article is "wrong" per se in stating that it would
be a defeat for the open web if it was abandoned in favour of DRM-compatible
"walled gardens" becoming almost ubiquitous, nor in saying that failing to
adopt DRM as a web standard would likely lead to this.
However, it misses the point- if we insist on free software, then that
incentive is suddenly removed. There's a general rule- if the choice is
between "evil" and "a lesser evil", there's probably a third option.
May all DRM modules be libre, and hence non-existent.