So you agree with someone refusing to make a cake for a LGBT marriage because of his or her beliefs and they deem it wrong? Of if they have a shop open to the public they should not be able to question the public behaviours as long as they are not illegal?
Moreover do you really know if retiring your code helped detained people, or not - maybe letting ICE procrastinate plans to make some data available to those fighting the actual situation?
And does he matter if his code is used in China in its detention camps? Or it doesn't care because he doesn't know, doesn't want to know, and pretend it's OK?