Weezer just did a very popular cover of Africa.
If Weezer didn't do that popular cover, people wouldn't be thinking or talking about this song.
Eh, maybe.
I can't tell you that I listen to classic soft rock radio, but I know that format does exist, and it's certainly possiblethat song has been in that format.
But the primary reason why people would be talking about Africa these days would be Weezer's cover.