Because Ke2 is a foolish move. Why it is a named opening I don't know.
"Sicilian Defense: King David's Opening"
You can't understand why 2.Ke2 has never been played?
Note that "K" means king , not knight.White plays his king on e2.
Does that seem reasonable move to you?
That wasn't the question at all, I was asking why the opening is named when no master ever played it. Try looking it up in the explorer.

I believe that GM Hikaru has played this on a number of occasions in online blitz and bullet.
It's usually played by players jokingly trying to play the Bongcloud Opening:
But instead meeting a Sicilian and continuing with the same king move.
Its a trump card to chess that forces to the football variation of chess. You run with your king on the developed side and the first one to get the king to the open back rank yells touchdown and wins. Its more entertaining because with one side only being able to run the queenside and the other the kingside its a race to the finish, whereas with both sides moving their kingside as the offensive line its probably going to be a draw.

The main move is a joke opening called the bongcloud opening, first joked about by hikaru, and that’s why you see games of his playing it. When met with the Sicilian, the opening has a different name, presumably because it was played for some silly idea before games were recorded

To answer your question, it is not recorded in any masters games because it is a bad move to play that all but guarantees a loss against someone of equal skill.
To expand on the question, not all named openings are good openings. The Bongcloud and the Fool's Mate are both named openings with "lines", but are objectively bad, losing positions.

Its a trump card to chess that forces to the football variation of chess. You run with your king on the developed side and the first one to get the king to the open back rank yells [goal] and wins. Its more entertaining because with one side only being able to run the queenside and the other the kingside its a race to the finish, whereas with both sides moving their kingside as the offensive line its probably going to be a draw.

Bongcloud????? I guess that is someone's name.
Yes, if i remember right it's named after a Chess.com user called Lenny Bongcloud

The benefit of responding to c5 with ke2 is that because the e7 pawn is not developed to e6 Black can't play an immediate counter-bongcloud (Ke7), this puts White ahead in Bongcloud development and they will therefore be at a meme advantage.
Playing the moves:
... results in an opening called "Sicilian Defense: King David's Opening". While this position has a name, it has been never recorded in any master games. How come?