Well the metric will have to change as time passes but I think its still a valid thing to look at. The fact that their career part existed in an era where album sales dropped off and they're still outselling or matching the most famous Canadian artists who's peak came in an era where album sales where huge only works in their favour.

I wouldn't use it as a basis for how good i think a band is but i think its fair enough as a metric for a Hall of Fame entry, especially the sheer number that they've sold. It shows that they're one of the most popular Canadian bands of all time, regardless of how cool it is to hate on them.

Going to stand by the fact this is not an oniony article. They are one of the highest selling Canadian acts of all time I.e. extremely famous. Im not a fan of their music but its really not odd that a band that sold 50 million + albums ends up in the hall fame.