You shouldn’t assume trust will naturally just regrow. This may be it, we may have passed peak USA.
In the post WW2 era most western countries grew lazy about sovereignty due to America's open-handed approach - this has been a wake up call and has severely lowered America's soft-power globally.
Has China ever threatened to invade Canada?
Canada isn't a first rate power - if the US or China decided to unilaterally target us it'd be deeply damaging. The hope is that working in concert with other middle powers we can form a cushion to soften a blow - not fully turn it.