Huh? Since when is anything from Rush considered to be "Metal"?

Having said that, the line between what is "Metal" and what is "hard rock" is often very blurred.

Iron Maiden is clearly Metal but not so other hard sounding groups like AC/DC.

“Whoever fights monsters should see to it that in the process he does not become a monster. And if you gaze long enough into an abyss, the abyss will gaze back into you.”