By that same logic, can Russia ask Japan to extradite a US citizen because they advocated for LGBTQ+ rights while they were in South Korea? Because that’s basically what’s happening here, I just swapped the offence and the countries involved.
Dude isn’t a US person, wasn’t in the US when he committed the alleged crime, and said alleged crime isn’t a crime where he allegedly committed it. US law isn’t world law.
EVEN IF the guy might’ve been rapist asshole (allegations were fishy as heck), this extradition proceeding is a gross overreach by the US, and the UK should have laughed it out of court. If a country has any leg to stand on regarding extradition, it’s Sweden (I think that’s where he was when he committed all the alleged crimes, both the sexual ones and the wikileaks ones).