Not sure if you're joking, so I'll elaborate my point.

Most people on this site live in the imperial core, a lot of them are American, and while most probably were never in the military, there's a good chance they have friends or loved ones who were. It's easy for such people to brush off something like "kill all whites" because the notion that someone deserves to be punished for something they had no control over (their genetics) is patently absurd, but "kill all current and former American soldiers" hits a bit different because, even if it's not meant as a literal statement of policy, anyone who's a regular on this site knows the sheer depths of evil that imperial core armies are responsible for, knows that joining such institutions means being complicit on some level in their crimes, and so they can't help but suspect at least a little bit that it really is what they deserve.