The individual spent years smearing cryptocurrency, insisting it had no future, was a ponzi, etc, because he was/is ideologically opposed to its undermining of authoritarian government control. He has publicly said he thinks a "totally free" society would be a "nightmare". It was his ideological disposition to authoritarianism that motivated his anti-Bitcoin writings. He attacked Bitcoin for the purpose of making a failure outcome for it more likely. His letter to the SEC is a perfect example of that.