I don't think that's as relevant for these huge regions of remote forest in Canada as it is for the lower 48 of the USA where you have a lot of population density and ranching and farming in the dry areas that historically burned on a regular basis. Maybe someone in rural Ontario knows the full story.

Yeah, the boreal forests super rural/unpopulated bc they're mostly up north and on the shield where it's hard to build. That's said, there is quite a bit of logging lands where the age, arrangement and species makeup think we have fires more often than they're supposed to happen.

That's something to note : Jack pine which is fire adapted doesn't mature for a pretty long time. The boreal forest is meant to have massive powerful forest fires that clear stands completely but they're supposed to happen on a timeline of like 80+ years.

I'm not as plugged in as I used to be, but I recall some folks worried about more birch taking up space up north bc of how often burns were happening and birch loves to form massive stands when the floor clears.