Hey. As I said before, I support UWM theory 100%. I just would like to give my theory as to how
TMC/Picori/Light Force/Picori blade fits into that timeline. Please share your opinion. It is only a theory. It would be wise to know the UWM timeline before reading this.
Before
OOT, The war that the deku sprout in
OOT speaks of broke out. Gustaf, the King, won the war, using the Picori Blade given by the picori, which made him the first king of Hyrule. (Note: The hero of Men, blonde with no hat, stopped the war. How can that be another version of Link, Link isn't Human. Not EVERY hero has to be Link

) Also, during
OOT you could find rupees under pots and stuff, which according to
TMC, the picori put there. Meaning that they have been around even since then, according to canon.
As stated in
TMC, The Picori sword was kept with the royal family, and lasted countless decades,
OOT,
TP,
TWW,
PH, untill it was finally recovered in
TMC. Somewhere in that time, Zelda was given the Light Force, passed from Zelda to Zelda ^^'.
Now without the triforce in
TMC, Zelda had to rely on the Light Force and the Picori blade, that was turned into the Four Sword during
TMC. Thats my theory. To support that, I might add that the Picori blade has been in the royal family's possesion for hundreds of years, because in
TMC, the picori gate opens once every 100 years.. How would the legends know of this if it had not happened before? atleast twice, to prove that it takes a full 100 years for it to reopen.