There is some truth in what you are saying, which makes for the best misinformation.

Canada’s fires are largely in unmanaged areas in wild forests not tree farms, suppression was never happening, the increase in fires is due to hotter weather (the north experiences higher increases than global average).

Forest management is more of a contributor in the US (but climate there too).

BTW prescribed burns do happen but they are heavily regulated, not a tonne of them. There were a bunch of deaths a while ago, which increased regs, rightly or wrongly.