I certainly can address this. I've had a hip replaced. I'm a senior. I'm waiting for two knees to be done. I can tell you I have a community mailbox. I live in Vaudreuil-Dorion in a new development. I can also express that people living in rural Quebec do currently have mail delivery, but if that were ever to be cut, they would be limited to needing a vehicle. There's no bus service in most of these regions. How do they get there? They're relying on family and friends.
I can tell you that around the box there is a bit of a slope. If it's icy and even if there's lots of snow and it's not cleared, it packs and becomes slippery. It is definitely a physical security issue.