Hmm..i don't know, i wouldn't write off this so fast, I mean isn't a world's tournament meant to be the best of the best competing, not just those who netdecked correctly and got lucky? I mean, it doesn't seem right if someone could (in theory) qualify for worlds in the first year they've been playing the game, where another person who has been skillful for a long time missed a qualifying spot because of a few bad shuffles
That would NOT work for these reasons.
1. New players would never be able to catch up
2. Every game and sport in the world starts out with the players equal at the beginning of the season, some sports, like football, actually give bad teams advantages(like picking first in the draft).
3. Pokemon is a game that changes with every set released, so somone good one year might not be good next year because they have to use a new deck or the old one doesn't work as well because of changes to the metagame.
1. New players will always be able to catch up, the only difference is the length of time required to do so, older, experienced players' ratings wouldn't change as much as an up and coming player's would
2. In an environment where the play isn't based on the individual, this makes sense, because it's possible that one team could have none of the same players from one year to the next, in a game based on the individual you are (ideally) the same person from one year to the next, your knowledge and skill making a difference
3. Welcome to trading card games...this isn't a closed system like chess (where everything stays the same no matter what) those who can't do as well because of new cards won't be as good because of the inability to adapt, while those who can do well and adapt will show a continued level of skill
Though if anything, i think the system seems much too fragile in it's current form, it seems far too reliant on perfectly flawless luck more so than actual skill