That QuirksMode article you posted includes an update acknowledging that it's wrong. I think the stance in the newer post it links to is more reasonable, though I'm still not sure it's all the way there.
The article provides a summary of potential problems with vendor prefixes, which still stands.
The author acknowledged that his suggested solution was wrong. See the redux [1] (which is actually mentioned in the article) for alternative solutions.
My main concern is that the dcurt.is article misses the point entirely.
