thanks(!) for posting, I don't know how I missed that!
There's no question that he comes across as a bitter, venom-spitting curmudgeon in that opinion piece but it reminded me that we do owe him a debt of gratitude for shining a spotlight on the very real issue of predatory publishers and on the potential threat to the rigor of scholarly publishing. I disagree with him (and with the excellent LSE blog on SciHub) that it's a failure of publishing. I think it's more a failure of promotion/tenure to have kept pace with a rapidly changing scholarly communications environment. If you're going to be graded on publications then people going to want to publish, Adam Smith's invisible hand is going to meet that market demand.
Guess it's my day to be the curmudgeon and, BTW, get off my lawn
Collette