Yeah I'm no expert in financial systems but since the money ultimately needs to be spent in the U.S. it doesn't seem that important whether the funds are frozen in the U.S. or locked away overseas and can't be transferred in for the next ~4 years.
I hope they change the name of the browser at some point, it sounds vaguely promiscuous (maybe because "ladyboy" is the closest word to it). One reason Chrome started taking off in popularity is because tech enthusiasts appreciated its speed and made their friends/relatives download it. Harder to imagine telling my parents to download something called "Ladybird"...