I‘m not sure if the original “Santa Clause Doesn’t Exist” baby t-shirt was an ultra-Christian ‘reason for the season’ thing. Probably not. Either way, there could be many Santa-believing children who can read the shirt, depending on the family / situation.
I think that this shirt would be much more likely to appear in a Christian household. It feels like another cheese ball attempt at humor. You know, the ‘ironic’ spins on pop-culture, awkwardly re-purposing songs and fashion. The original baby-t with Santa struck me as being designed by a Christian trying to have a laugh because children believe a goofy thing that they’re told. It’s a bit hypocritical!
My wife and I are both atheists. We don’t do the Santa thing. Many parents do. Some are mixed marriages, yet some are atheists. I understand that ‘Santa’ isn’t firmly grounded in religion, and traditions can be soaked up through cultural accretion. It’s a personal decision, and there is no ‘right way’ to be an atheist parent.
Dale McGowan’s books are good places to look. McGowan’s Parenting Beyond Belief contains essays from both sides of the ‘Santa debate’. What side are you on? Do you ‘do Santa’?
I did this one by request. Feel free to steal it. If you happen to make a shitload of money from any of my stuff, donate a chunk to an atheist organization. I suppose I’m alright with photoshop (not amazing, but I get by). If you’ve got a decent idea but lack the skill set, send me a request on twitter.