TV’s Frink said:
And how do you know Luke told anyone what really happened anyway? He could have easily wanted to keep the whole thing to himself.That’s been suggested somewhere before, but in my mind, it’s absurd. To understand why it’s absurd is a bit complex, and many people won’t take the time to digest it, but it is absurd.
Here’s why: Vader’s redemption is probably the happiest, greatest thing that has ever happened to Luke and a shining example of how GOOD TRIUMPHS OVER EVIL.
With Yoda’s passing, Luke is now the only champion of the Jedi Knights. He’s the only one. It is his duty, his calling, to tell a whole new generation about the Light Side of the Force and warn them away from the terrible dangers of the Dark Side.
So as the new Head Chief Jedi, Luke’s job, Luke’s duty, would be to spread the message of the power of the Light over the Dark. As Yoda said, the Dark is not more powerful, but it’s easier and seductive and must be resisted.
There simply would be no better story, no better evidence, no better shining example of how GOOD TRIUMPHS OVER EVIL than the story of Luke’s very own father.
That is not something he’d just keep to himself.
Unless he might have been deeply conflicted by the fact that his father sacrificed himself to save him rather than having allowed Luke the opportunity to save his father in turn…the concept that his father ultimately chose him over the emperor, power, and life itself might have a very sobering aspect that might keep Luke quiet and humble as to the telling…consider that Luke had grown up hating Vader only to discover too late that he was deeply mistaken as to the character and true identity of same. Luke may have felt a great deal of regret and the pangs of a missed opportunity whenever the subject might come to the fore. Ruminating on the events of the day might even be so difficult as to evoke a semblance of PTSD…
It is difficult to say for certain…