If that's their view then whoever said that is an idiot. The CFL is not a serious sports league and the Argos are not a serious football franchise. If the NFL came to JUST Toronto, forget the rest of Canada, the entire CFL would go down in a ball of flames because the entire country would prefer to watch real football in an actual pro sports league, not some rec league with $200,000 payrolls for an entire team whose fan base consists entirely of blue collar, middle aged men.
The Argos can exist and you are free to cheer them to your hearts content, but they are interfering with an ACTUAL pro sports team, that being the Blue Jays, and their ability to play on a vastly superior playing surface than the one they are now. If the Argos are REALLY, ACTUALLY a legitimate professional team, then they should go get their own god damned stadium. But it will never happen because no one will pay prime dollars to watch an amateur team play in an amateur league.