The article is factually correct, but in my view misleading. Of course, The Big Short, while probably the single best book to describe the financial crisis, also is a little misleading on this point. Here is what I mean. Yes, it is correct that Greenblatt pressured Burry to return his money. The book sets this up as a David vs Goliath moment in a way. And that is true. The article however takes this a step further to say that while Greenblatt preaches patience, when it came time to his own money he didn't have any patience. Not only that, but he took what could be construed as "extreme" measures to get it back implying he panicked, etc.
Here is the disconnect. Burry is one of my heroes. In hindsight Greenblatt should have rolled with it and let Burry do what he wanted. Remember though that Greenblatt "discovered" Burry through some early value investing chat boards. Greenblatt invested with him and backed him as a value guy - i.e. a guy who invests in equities. I have no idea what the documentation said, etc., but that was the gist. All of a sudden Burry is investing in credit default swaps. Again, Burry is a hero of mine, but why is it so unreasonable of Greenblatt to say "hey, you've lost a bit of money here and this isn't even why we invested with you"? Maybe his tactics weren't right, but then again from all descriptions Burry basically ignored him.
So getting back to the original point, it wasn't a lack of patience, but simply a change in facts (from Greenblatt's point of view). If you invest in Fairfax and find out tomorrow they've sold off their businesses and want to become a consumer electronics retailer and have lost 15%, do you wait to see what happens? The facts have changed and so you say while I think they are tremendous capital allocators I don't want to be in the consumer electronics business. Has nothing to do with patience. The article is silly. So while in retrospect Burry was right and Greenblatt was wrong, it could have turned out the other way too. And in any case, he has the right to at least try to get his money back when the investing parameters have changed.