What were the reasons people were unhappy with sidewalks? I cannot fathom that. Montgomery County is a weird place.

As for mailboxes, if they're not used to a certain volume, the USPS will move or remove them. It makes sense in that regard, it's inefficient to check a box daily if it's only collecting a few pieces, probably from the same small handful of people. I also know that sadly, a number were removed in some urban centers (along with trash cans) for fear of bombs. A testament to our times, I guess.