Hmmm, I don't know, KenV.
Perhaps the full facts of Bergdahl's case weren't known in the immediate aftermath of his release?
Perhaps the facts were known and the president was trying to put something of a positive spin on what was otherwise a sour story for the US military (we all know how the US public likes to hero-worship its military)?
Perhaps it was none of the above, and some other reason was in play?
What's the reason you're driving at, KenV? Hmmm, indeed.