Oh dear lord, I enjoyed the show. Loved it. I have no problem suspending disbelief and being entertained. That doesn't mean I turn my brain off afterward, though. It's possible to both enjoy something and recognize its boundaries.
Your logic is so intellectually dishonest. Your example of Santa is perfect evidence. You love Santa. Great, me too. It's magical to see my kids talk about him, and see how much joy it brings. I love my memories of being a child and experiencing it. I love every bit of it. But, that doesn't mean that I have to ignore the implausibility of it. That doesn't take anything away from it. I think it actually enhances it. And if it did take away, that would only be a measure of the smallness of one's own mind. Thank goodness I don't have that problem.