Ganon in OoX didn't have the brain to go to Hyrule and do anything. The only thing we know about Ganon's revived version in OoX, is that he was "a mindless, raging Ganon", and the only two quotes he made were "Kill All, Destroy All!", and, "I am Ganon, the Evil King!". Taking that into account, I'd say Ganon had no intention of doing anything in particular in Hyrule. He just wanted to kill stuff. He had absolutely NO reign of tyranny in Hyrule during OoX. None whatsoever.
On the other hand, in ALttP, we know that Ganon sent a pawn (Agahnim) to Hyrule to carry out his deeds. In doing so, the Ganon-controlled Agahnim captured the six maidens, killed the King of Hyrule, and kidnapped Zelda as well. Ganon did have a reign of tyranny over Hyrule during these events. This goes perfectly with the BS in LA's manual, while if you try and place OoX after ALttP, then you run into problems as mentioned above.
So, you have a BS to a game (LA), that essentially says Hyrule was being terrorized by the antics of Ganon. That same BS also gives Link the title of the Hero who defeated Ganon and saved Hyrule. It also speaks of the people of Hyrule being afraid of Ganon's return. All of this fits perfectly if you believe ALttP/LA, because in that game Link did defeat Ganon, saved Hyrule from his obvious tyranny, the people of Hyrule would know of this because of their king being killed and their princess being captured, all of that they would know about after everything was said and done. It does not fit perfectly after OoX, where Link may have defeated Ganon, but he did not save Hyrule from Ganon's tyranny and the people of Hyrule would have had no reason to be afraid of Ganon's return at all because he was never there to mess anything up during OoX.