The quoted text is incorrect/misleading and it's not even in that particular embedded clip. What he said was:
"When you buy non-productive assets all you're counting is whether the next person is going to pay you more because they're even more excited about another next person coming along. But the asset itself is creating nothing. One of the interesting things for example is gold ... and it doesn't produce anything"
He compared Bitcoin to Gold directly as they are both non-productive assets. He then goes on to explain how a farm is a productive asset.