Because they have no country of origin.
Racism denotes an act against an inferior race. Accusing whites of being racist means they're acting like masters. Accusing anyone of being Anti-semitism implies condescension toward an equal.
That's the psychological effect I guess at least.
I don't know if the term was birthed after WW2 but either way it carries the connotation of hate = genocide. You can be racist toward other races but if you're anti-jews, you want their extermination more or less.
So he was willing to let his body fade to dirt, but he wanted to be thawed out when his mind could be re synced to his penis in an artificial body so he could continue to fuck in the future.