It's true, many analytics programs and projects fail. I've written and spoken on this topic often.
That's not to say that analytics, Big Data analytics or any other kind, can't be successful. The problem is almost always that the investment is made fast and furious without a decent plan for success. Often there are not even any success criteria established. How these investments get approved is a mystery to me.
Why would anyone pick on someone for talking honestly about the fact that failure is possible, and common? This is something we all need to acknowledge in order to help us plan and avoid pitfalls. Perhaps the word "thousands" was a bit of hyperbole, but is that a big deal? As for the criticism that the author works for Teradata - he's up front about that, it's in the profile right on the page. What exactly is suspicious about this message coming from someone who works for a vendor? Are people going to hand over their bank accounts because he warns them that projects often fail?
If we don't get the hype out of the analytics biz, then many businesses are going to waste money and conclude that analytics is just another meaningless business fad. Give Paul credit for having the guts to frankly admit that failure is possible.