Quote Originally Posted by Dante WolfWood
also, yes, I also believe the fayth modeled tidus after shuyin and I believe square didnt make any quotes bc they wanted people to feel smart by figuring it out by themselves...if you didnt notice that tidus was based off shuyin...pay attention instead of finding ways to diss the game...
They couldn't have. The Fayth created Aeon Zanarkand based on their memories of the place as it had been 1000 years before Final Fantasy X began. The game's present is 1000 years later. Any Aeon Shuyin they made would long since be dead seeing as how time passes the same in Aeon Zanarkand as it does in the rest of Spira. For that matter, Aeon Zanarkand exists somewhere in Spira itself according to the Final Fantasy X Ultimania Omega Guide.

Further of note is that the Fayth were not randomly creating new people any longer. The city's own residents took care of maintaing its population through copulating. At best, Tidus is a descendant of Aeon Shuyin. The only purpose, however, that their resemblances really serve is to be a plot device to get Yuna to join the Gullwings and to provide a plot twist later in the game for the player when they learn that Shuyin and Tidus are two different people.