That's a sports media problem, less than a Toronto problem. TSN and Sportsnet are both based in Toronto. They have the most staff in Toronto. Toronto teams have the most fans.
Most importantly, Toronto teams have by far the most haters. The Globe & Mail writes a story about Calgary or Ottawa, and it gets five comments. ANYTHING they write about Toronto gets triple digits. They don't care that those comments are mostly people complaining about so many Toronto articles or fans and haters arguing. It's all traffic to them.
I mean, the Toronto Sports Media called up James Reimer's mom, FFS. Toronto sports fans don't want that garbage foisted on them, any more than fans anywhere else do. But, you've got so much sports media concentrated there, that you get saturation coverage. Then, when TSN needs to fill air time, they've already got all that Toronto centric content they can air for cheap.
The decline of local broadcasters in favor of national coverage has contributed a lot to the problem. But it's not Leaf fans creating it. You know who doesn't give a damn if the Leafs are "Canada's team" or not? Leaf fans.
If TO does not want to support CFL, good riddance. We don't need you. We don't care about you. Let's concentrate on the markets like Saskatchewan and Ottawa that want and have earned CFL respect and the rewards that come from that.
I don't think the league is going to abandon Toronto, because it's important to TSN, and if they can help prop the team up, sure. But they certainly should spread the Grey Cup around more instead of overdoing it in Toronto. I bet Ottawa puts on a great one next year.