The race war issue is a bizarre one, because what people think it is:
>jews and other races envy and resent the whites and want to exterminate them to have a jew/brown world to prove they are actually better
Vs what it actually is:
>jews and other races envy and resent the whites for being naturally awesome, and want to use technology to become the whites themselves and defeat nature

Depopulation would logically be racially targeted, but its not, and I doubt that is so because of lack of means of doing it as such. While jews are less affected, there are other white groups less affected on similar scales and demographic shifts wouldn't play out in any particular way.
The main concern is likely dealing with upcoming life extension tech they can't control and the general malthusian hatred for the loss of meaning that comes with huge populations.