True Spock's plan to follow Pike's last order was dreadful but you can't give Kirk major credit for saving Earth. His plan was equally terrible. But of course I'm judging the characters based in the assumption that future humans are smart. If federation humans are dumber than us or at least very different in outlook then the events of the movie make more sense. Stupid humans might indeed hold up Kirk as a paragon, akin to Luke Wilson in Idiocracy or Sylvester Stallone in Demolition Man. Pike tells Kirk as much. It may look dumb to us but not to the federation brass.