Why is there no Nato vs Russia and China

Im new to Sim so i dont know that much about it but why is there no option to play Germany the Us and other Nato nations against Russia and China for Jets its probably because of balancing reasons but i think to just have the option to play this set of nations

some people would sufffer and complain

Probably the same reason we don’t have it in RB: muh queue times.

Most importantly, it will affect queue times.
Secondly, this is just a video game unrelated to history or real-world equipment data, so the only purpose of such an opponent-selection feature would be to be abused for stat padding.