Is it really illegal?

I recently saw this article: www.chess.com/article/view/the-11-worst-chessboard-photos
Obviously, the situation shown is impossible. Black would need to be missing a piece out of his starting position for the h-pawn to get to g3. But how close can you get to this position? The answer is: Pretty close.
1. Nc3 Nc6 2. Nb1 Ne5 3. Nc3 Ng6 4. Nb1 Nh4
5. Nc3 Nf5 6. Nb1 Ng3 7. hxg3

Now, I did that maneuver with the black queenside knight. Making the same position, except using the kingside black knight instead of a queenside black knight, is impossible. Can you prove to me why that is?
Good luck.

Out of which 11 situations are you referring to?

Knight cannot gain a move.

Sure I can!

de.lichess.org/snQYMq7l

de.lichess.org/0hGQYB0h

Of course, there's that. :)

@Sarg0n Why the weird manovering in the first game? The knight cannot lose a move indeed, which is why 4...Ng3 must lead to the same position. :)

Yeah, but it's the other one. :D

#4 4...Ng3 makes it only 5 moves.

You can't do it without losing a piece for Black, though.

You can't win a tempo with the knight and you can't win a tempo with rook moves say Ra8-b8-a8. Both are somewhat "paired" (difficult to explain that).

You can win a tempo AFTER taking on g3 because of the open h-file.

According the FIDE rules the young lady has not completed a move so everything is alright. The position had not changed yet because she still got the move.