Skyward Sword story inconsistencies (SPOILERS!)

[yanamaster]

Mr Khan said:
You forget The WindWaker, where the King's wish drowns the land of Hyrule forever.

The Triforce's wishing power seems to operate under a rule-set similar to the Dragonballs, dispersing after the wish so that they can't just be endlessly abused, otherwise the climax of WindWaker would have gone

Daphneus Hyrule: Drown Hyrule
Ganondorf: Don't drown Hyrule
Daphneus: Do it!
Ganondorf: No!
Daphneus: Yah huh!
Ganondorf: Nuh-huh!

et al.

Link wished to destroy Demise in the present.

The inconsistency in Skyward Sword seems to be in how they treat Time Travel. The revelation that Zelda had to go back in time to take the place of the Goddess to seal away Demise (and eventually be awakened by Link in the present again) implies a stable time-loop theory of time-travel, whereby traveling through time was required to create the status quo, similar to the story of the first Terminator film.
However, the finale of the game has Ghirahim go back in time with Zelda to revive Demise early on, and Link go back in time to kill Demise, which he did, in the past. That dicks with the whole thing, because if Demise was revived but then killed, he's never around to set the events of the game in motion in the first place, and there we have time paradox. Unless Link's victory created another split timeline, but that's a whole separate kettle of fish

Well, there is one teensy speck of a detail that can set these events straight.

Link didn't destroy demise, he defeated Ganon/Ganondorf/the first incarnation of the evil that haunts the series. What this means for the story....is anyone's guess. I mean, we don't really know what happens after the fight is over. supposeably the remaining evil of Ganon is sealed in the master sword, but that simply cannot be true because otherwise the curse would have never worked since Ganons soul would have been trapped inside the sword.

What this may mean is that after defeating Ganon, history was set back in its course, demise was created from the remains of Ganons existence and sealed and the time loop has made a full round. We can't say "that's impossible" with all certainty since we are never shown what transpires in the past after the battle and are sent to the present only after the triforce had been used.

Since Ganon, a wielder of one of the triforce pieces cursed Link and Zelda to an endless spiral of conflict we can assume that the triforce cannot make one wish stronger than the other, ergo if Ganon cursed the others, than the wish to completely destroy Ganon cannot be allowed, at most it will vanquish him physically until he is reborn again. 

Like i said, this is a small itsy bitsy detail that cannot be totally disproved simply because we were not shown what happened to the past world after the fight with Ganon. For all we know, after the fight, demise was created yet again.