I'm unsure where everyone is from, but as a Canadian from a semi small town.. there's laws about radio, 1/3 of all music must be Canadian.

Smaller towns have about 5 stations, rock, pop, country, CBC and Jesus...

It has happened with every single band / artist in my lifetime, Celine, Rush, Shania, the Hip, Avril and Nickelback... Those 3 stations find a reason any of those artists fit into their category and then all you hear for months, every third song is Nickelback and it drives you full mad.

Sometimes I worry that our annoyance spread with their popularity outside of Canada, and Michigan did steal our accent, so they might have borrowed some of the Nickelback hate too.

On a brighter note, I don't instantly change stations when they come on the classic rock station anymore, so maybe the world will forgive them in time :)

TLDR - Canadian radio is like BBC1, same 5 songs on repeat