This article is speculative at best, but I can't say my heart didn't skip a beat at the prospect of never seeing experts-exchange.com in my search results ever again.
But on more than a few occasions, I've gotten some pretty high quality answers off their site.
Experts-exchange got around that by making the answer appear at the bottom of the page and required a lot of scrolling.
Which, I guess, is a mindset that I think generally makes this concept not terribly useful: you can always personally ignore some domains that suck. The real issue is how many places have duplicate content, or even stupidly "reblogged"/"syndicated" content, that show up when you search for something: the domains for that are often very search-specific.