FYI, Fortnine is based in Canada.

Increases or decreases in the frequency of pedestrian-driver fatalities is affected by lots of things, although I suggest that poor road design and traffic laws might have a positive feedback effect when combined with limited forward visibility (e.g. a truck with poor forward visibility isn't a huge liability in Canadian road designs might be a larger liability in typical US road designs).

Unfortunately I don't know if we collect the right accident statistics. Perhaps the more relevant question is: are pickup trucks over-represented in pedestrian fatalities as a result of vehicle collision compared to other vehicles, and has that representation grown as truck grill heights have grown? I found a doc on Canadian pedestrian fatalities, but it classified all passenger vehicles as a single class -- and unfortunately that doesn't tell us much since most 4-wheel pickups are classified as passenger vehicles.