If I recall correctly, there were originally three freedoms, but then a fourth one was thought of and put at the front to give it prominence, numbering it as zero as not to disturb the original numbering.
Unless you think they'd add a "Freedom -1" in the event that they add a 5th even more important freedom, then this is clearly just selected because 0 indexed lists are cute to programmers
Unless you think they'd add a "Freedom -1" in the event that they add a 5th even more important freedom, then this is clearly just selected because 0 indexed lists are cute to programmers