Dotcom's troubles pre-date anything involving him with Wikileaks. He relocated to Hong Kong in 2003 (and again to New Zealand in 2009) precisely to shield himself from European and American prosecution, as he was starting Megaupload. He's been in the crosshair of copyright police ever since. Trying to "shake him down" by using charges he was clearly expecting for a decade, would be a pretty silly strategy.

As for anything he says or does, it should all be taken with a massive grain of salt. The facts, even before Mega, show him a lier, a narcissist, and a huge self-promoter. He's fundamentally just a scoundrel with no real ideological background beyond "anything that makes me money should not be illegal". Taking his word at face value is chasing shadows.