Looks like yet more retardation has infected the HTML spec...
https://html.spec.whatwg.org/multipage/custom-elements.htmlA bunch of related shit was added to the parsing spec. Fuck Google and its attempt at taking over the Internet by constantly churning the spec and its browsers. Stop torturing the Firefox folks who are trying to keep up. Fuck this "progress" bullshit. And big fuckings to all those mentally retarded trendchasing "developer" cunts who blindly parrot their drivel and follow them into their monopolistic plans.
This is war. We need to fight these companies and their attempts to enslave us through their propaganda and fearmongering. We need to reject their herding of the sheeple. We need to bring back the document-oriented hypertext markup system and fight against the compulsory use of JS and DRM-oriented user-hostility. Make Internet Great Again!