That's his whole thing. His films typically come in three or four 60 minute sections. He occasionally does stuff like stage live action interactive theatre versions of his documentaries in abandoned warehouses. He once did a show with Massive Attack. So when he writes articles like this, it's him being restrained.

See the following brilliantly observed parody for the reasons to take him with a pinch of salt: https://www.youtube.com/watch?v=x1bX3F7uTrg

That said, he is one of my intellectual idols, however much he does enjoy gimmickry.