Regardless of how vapid Japanese pop music is, I had the &quot;metal-not-metal&quot; argument enough times when I was a teenager to know that it&#x27;s nothing more than an easy way to waste 30 minutes.<p>When did Metallica stop being metal? Was it &quot;Metallica&quot;, &quot;Load&quot;, or St. Anger? Were they ever metal? Does anyone over the age of 16 care? (the answer is yes).