[saghm]

> He said that he helped build a case for it -- not that he still supports it.

I would expect that if they didn't think they were unnecessary anymore, they would have said something like "I helped build the case for freeing prediction markets from restrictions that I thought were unnecessary". Their description of the predictions being unnecessary is still stated as a present tense fact (and the entire clause is in bold-face, making it clear that it's something they want to draw attention to).