Also, if we keep buying Chinese EVs then in a possible war with China all they will have to do is turn on some power-mosfets in the battery circuit and they turn entire cities into smoke.
Probably not. Nuclear deterrent is just that, a deterrent. Once it's used, it's done. I don't think either side would use it on a "that's not fair" play - they'd really be reserved to respond/prevent/equalise some event/situation that would cause them to lose a war.