No, they definitely don't want to be in Russia because Tornado cash was used to make donations to Ukranian army (because the donators don't want to go to jail, since it's illegal). So Russia would be happy to jail the developers of that service.
Does Roman get a choice in the matter?
Do you suggest that Russia can make a list of people they would like to kill and US would be happy to provide them to Russia?
Apologies. I assumed he was a Russian citizen but he is not. No swap or extradition is possible then.
Just checked online, he actually seems to be a russian citizen
Indictment says:
At all times relevant to this Indictment, ROMAN STORM, the defendant, was a naturalized United States citizen who resided in the United States
The citizenship doesn't really matter, b/c Russia may want to kill own citizens too (ex., if they don't support Putin).