I won't make that allegation, as I have no evidence in support of it.
I will suggest, a general resistance to change, and an aversion to cutting expenditures/budget size may be factors.
Perhaps, but if you note in the story, the shrunk the truck without shrinking its water holding or water processing capacity, and without leaving it shy of crew space.
Many Toronto Fire pieces of equipment have crew cabs seat six (I'm not familiar enough w/their fleet to suggest what percentage); Toronto doesn't have trucks with a crew of six, none have more than four so far as I'm aware and some may even have three.
There are little things one can tighten up on w/o sacrificing firefighting capability.