Although I fly Alaska fairly frequently, I can't recall the "Jesus" cards...musta missed them.
But in December 2000, I did fly Royal Jordanian from Amman (Queen Alia International Airport...now that's some irony) as Ramadan was in progress. Being a visitor to their country, and wanting to comply with their sensibilities, I and my wife had not had anything to eat or drink for about ten hours.
As soon as we left the gate, we were "travelers" (tho' the sun was setting), and the FAs brought out cups of water for all passengers. As we flew to Cairo, the on-screen video continually showed the proper orientation to Mecca, should any passenger feel it necessary to know.
As a Christian, was I offended? Hell, no, it's a bit of foreign culture, and I appreciate that. So should I get upset over "Jesus Cards?"
Hell, no. If it's a culture that's foreign to you, just appreciate it for what it is. If it doesn't fit with your world view, so be it.
I just look for the cheapest fares...passive proselytizing is worth it, if it saves me money. Get over it.