I think most Canadians are more interested in housing and cost of living issues ATM. Sure, cutting back spending on war stuff seems good, but that's not the thing to lead with.
If you want my vote, tell me that he's going to lower the cost of housing, increase the availability of housing, make it easier for my kids to find jobs, make job security more of a thing, and lower the cost of food. What's he gonna do about the gap between rich and poor?
Cutting back on military spending is fine to pay for that, but that isn't going to grab most people's attention.