NI, if your correspondents are religious, do they always send cards which reflect their sentiments, or do they sometimes send pound shop / charity cards, which may be more politically correct / neutral, either because they (the cards, not your pals) are cheap, or maybe because they take into account that you don’t celebrate Xmas religiously??
We should also consider the text therein. If the card has a neutral snowy image or similar, say a fictitious, rustic country scene, is it always the case that the text inside, assuming there is one, is always non-religious?
The final question is this. Are we overthinking this and just a bit pissed?