All I'm gonna say is look at this city's history. City council has only voted to remove bike infrastructure once in recent memory, and that removal was tied to a massive upgrade of bike lanes on a parallel street 300 meters away. I know the Toronto biking community loves to be pessimistic, but there's no reason to believe that the Bloor bike lanes are going to be removed. They might not be expanded beyond this 2.5 km segment but that's not the same thing.
People who care about creating safe bike infrastructure (which, it should be noted, is a wider group than just "the biking community") are pessimistic because a sizable number of the councillors with the most direct control over these things are overtly hostile towards it. The fear isn't magically derived out of nowhere; it's based on the most simple form of observation (DMW taking to Twitter recently to celebrate the "anniversary of the removal of the Jarvis bike lanes" was my recent personal favourite).
Even setting aside commentary about individual councillors (which, at the end of the day, is the most important determinant), one can be reasonably depressed about the state of bike safety infrastructure -- alongside the simple notion that there are no plans to make things demonstrably better -- simply by looking at what piddly infrastructure we do have, and how seriously it pales in comparison to what *real* 21st-century cities have built, are building, and are planning to build.
These are all observable facts, not fictitious musings.