I interpreted what he said to mean "I have respect for devs who approach this for just the art, but if you don't consider monetization into your design from the beginning, you are self sabotaging your chance at business success".
He just said that with less politically correct talk, which is easily taken out of context.
Also there's this assumption in this thread and in HN in general that "monetization" always means bleeding people out of their money. Sure much of the industry does that, but I don't think that has to be the case