I confess to not having read the whole thread. It's just too much.
I'm an atheist living in a neighborhood that overdoes the outdoor Christmas decorations to the point where we've literally had busloads of people touring the neighborhood to look. I'm not offended, but DH and I are somewhat amused at the apparent competition for who can have the biggest electric bill in November and December. I do, however, have problems with musical outdoor decorations. I'm pretty much sick of Christmas music in the stores and commercials by mid-November, so to be subjected to it while I'm trying to get to sleep IS offensive.
At first I thought we'd try a few nonreligious outdoor decorations, for continuity more than anything else, so picked some up on clearance. They don't get set up, and this year I think they're getting donated with a whole bunch of other stuff.
I do a brass bell wreath, an indoor tree (with NO breakable ornaments), and a couple of other secular-type decorations, and feel like I've done a LOT. Every year, my Mom sends more Christmas decorations, most of which get thrown into the donation box, but she'll never know because she'll never visit this time of year.
The neighborhood where I grew up used to "Light the Way for Santa Claus," and it was absolutely beautiful. Every house was given enough candles and white bags to do a luminary at the edge of the yard every 10 feet. As a corner house, we had a double-dose. As beautiful as it was from a second-floor window, I would love to have seen a real aerial view just once.
On Christmas Eve, the neighborhood found a volunteer Santa and some "elves," and cruised through the subdivision after dusk, handing out candy canes. We got printed schedules with those luminary supplies, so we'd know when the kids should be out to greet Santa. It was cute and sweet, and we had a pretty good religious mix. One year my sister's first DH, who happens to be Jewish, was asked to drive Santa around because he had a nice classic convertible. He had a blast doing it, and never even considered objecting.
I don't need anyone shoving their religion down my throat, but decorations on private property are not a problem. Sheesh.