I mean I can think of plenty of conflicts the RCAF could get involved in over the next few decades that might involve neighboring semi-neutral countries or ships, but of course Canada definitely has its own air search radars.

As for flying out of the bush, there is nothing unique to an airport runway that a fighter jet needs that cannot be met by an appropriately swept road and the right support vehicles. As an example see basically every single takeoff and landing the Ukrainians have done in the last three years. Gripen is especially good at it with the goal of being able to use very short mountain roads and which is worth considering if your airforce is built around it, but it’s hardly unique.