“Any time I see the letters BCE, I know it is coming from a Christian hating bigot. No other possible reason to use that term.”
All it means is “Before the Christian Era”. Do I hate Christianity if I simply don’t regard its dating as definitive (Before Christ), but its historical emergence as too significant to ignore? The exact birth year of the child who later became known as “Christ” is not known, merely claimed. His date of death (AD) would have had to been a decade and a half later. If you are a Christian, you take that claim as authoritative, and all power to you. If you are not, you take that claim into account because that is the way that Christians date history, and Christians are too important to ignore, while at the same time registering a modicum of skepticism. “Hatred”? Lighten up. Come on.
Historically, it likely means Common Era, an offshoot of the older Vulgar Era terminology, which doesn't change the accuracy of your post.