Well... they weren't wrong. Since music became easily accessible on recorded formats, live music has fallen a lot in popularity and smaller artists who previously would have had decent lives playing in their home region now are eclipsed by big artists with more talent and money to develop their sound. Not saying it should have been banned, but what they were afraid of did come to pass.

We don't know what he was thinking, but I find it highly unlikely he thought he could "get a few more kills" (that's CoD thinking, not actual war). A lone charge against a machine gun nest was a suicidal action. More likely, he felt so much shame and dishonor from his demotion, and the war ending before he could get it back, that he couldn't bear to go back home and chose suicide by enemy instead.