He don't know about the effect such actions would have. I don't think that 0 is a good representation of what would happen if you just juke the exchanges. Nuking the exchanges would prevent a lot of people from selling bitcoins.

As far as the prediction that he made that we can evaluate on the other hand he was still wrong. I do think that thinking too much in a blue vs. green is part of the reason why Moldbug made that error.

Yes it's fun to engage into blue vs. green debates but you really have to take care to avoid coming to false conclusions.