If you knew hockey you would understand, thus i understand why you do not. Actually not only is this a Great Experience but more so, a Invaluable one for the Leafs and the other young teams and young players in the playoffs.
Well, let me explain my point. I wont argue by saying you dont know anything about hockey, too easy...
For this 1st serie, there was 3 possible scenarii for the Leafs : a/ They lose in 4 or 5 ; b/ They lose in 6 or 7 ; c/ They win
1/ Experience come with the number of games played in playoffs, so the more game they will play the more experience they will take. So the first scenario (lose in 4 or 5) is the worst to take experience.
2/ Moreover, to take experience, you have to understand why you sometimes lose in playoffs and why you sometimes win. If you lose almost all your games, you can't understand why you sometimes win so you lose 50% of the experience you can take
3/ My last point : Confidence is everything for a young player. For the young Leafs players, knowing they are able to win some playoffs game is essential, if they take a 4-1, it would be hard and they would probably lose a part of their confidence...