That, of course, is the problem...Christmas is NOT a generic holiday. They can market to any group they want, but if they're going to attempt to redefine a Christian holiday as a generic one they should not be surprised if some Christians find that offensive.
I'm laying odds that sometime after Dec 26 the Holiday section becomes obsessed with Valentines Day, then after VD Mothers Day, etc etc. All department stores have a seasonal section where whatever the upcoming big commerce holiday or non-holiday big event (like back to school) is displayed. Looking at the organization of the website it seems like they're trying to do the same thing there as in the store.
"That, of course, is the problem...Christmas is NOT a generic holiday. They can market to any group they want, but if they're going to attempt to redefine a Christian holiday as a generic one they should not be surprised if some Christians find that offensive."
They're not doing that.
The only way you could think that is if you want to be offended.