Linus chose to move to the US as well to become a US citizen.
To be fair he never claimed to be an idealist.
Also he is anti Russian himself as he made clear in his first comment in the thread. So being forced to remove them is probably a bonus for him.
Nothing, he will be dead. Anyone that NSA would bother to use their new and expensive quantum machines on will be an organization that should know better than to be compromised by decades old secrets getting out.