Obviously the extradition treaties have limits.
Here's the countries: https://en.wikipedia.org/wiki/List_of_United_States_extradit...
It's not hard, in theory, but it does rather limit your movements going forward.
Here’s a recent example - https://www.bbc.com/news/business-56248558
https://www.justice.gov/jm/jm-9-15000-international-extradit...
If the applicable treaty or convention does not obligate the United States to extradite its citizens to a foreign country, the Secretary of State may, nevertheless, order the surrender to that country of a United States citizen whose extradition has been requested by that country if the other requirements of that treaty or convention are met.
I genuinely don't know where Snowden sits on that - I think he serves as a useful demonstration of the power of Russia and the failings of the US, but obviously know nothing.
On the other hand, a failed crypto bro who has taken oligarch money and can't repay it with interest. I think that is going to be the very definition of a "Russian Holiday".
If you look closely at that statement, however, you can see that it's recursive and missing the base case: the rule which says "If they sold to the US investors they have to abide by US rules" is itself a US rule.
In Terraform's case, it looks like they're in Singapore. Which the US does indeed have an extradition treaty with.