While imaging the inconvenience of switching chat apps, you might also imagine someone who lived in Ukraine who just wanted to sit around all day and read HN and now they are dead after being bombed by Russia. Apple is complying with the US sanctions because they are a US company. There is no magic here. The Dutch company that owned a 27% stake in VK had to write down its stake, $760M. Again, marginally more inconvenient than switching chat apps.