Regarding the song, I find it all a bit ridiculous. During the war, men were conscripted to go and kill other humans and if they didn't go they were considered a wimp. Nowadays you're not even allowed to talk/sing about certain subjects, or most subjects in fact, without someone being offended.
Is fawlty towers going to be banned because Basil shouted "Who won the bloody war anyway?!" at a group of Germans?
I'm not pro-singing songs of that nature, but everything just seems to be impossible. No wonder so many people are getting so stressed, there's no possible way to keep up with what's acceptable and what's not.