Since there's sufficient evidence that Santa Claus' story has been developed and embellished from a real life character, and we know pretty accurately how it came to present form, there's no need to be 'absentheist' about it, and it can be dismissed as legendary stuff.
I could re-do the above for the traditional idea of God:
Since there's sufficient evidence that the God story has been developed and embellished from real life tribal beliefs, and we know pretty accurately how it came to present form, there's no need to be 'absentheist' about it, and it can be dismissed as legendary stuff.