i don't get it. are the nazis the good guys in wolfenstein?

main character literally set off a fucking nuke. the only explanation is 'fuck nazis'. do these people think that civilian casualties on that level are fine?

they give the grunts big scary bad uniforms but rank and file of the army has jack shit to do with the upper politics. what a stupid fucking premise for a game. then he gets his fucking head cut off but survives because someone put it on another body?