So looking at this again, if I understand correctly the main arguement for Ganon's downgrade seems to be that he could have maybe used a form of time manipulation similar to the sun song instead of telekinesis to cause the Endless Night/Forsaken Fortress night, right?
My arguement was that Ganon never displayed any time related abilities(looking at FSA eternal winter time stop, it was actually Vaati who caused it not Ganon. This one is a different Ganon anyway so it wouldn't hurt my case:
https://zelda.wikia.com/wiki/Frozen_Hyrule_(location). Correct me if I am wrong, I haven't played FSA.) So time manipulation is just speculation with no evidence and probably the weakest of the three possibilities (telekinesis, time manipulation, simply magic).
Now what supports this, is the statement of the composers of the sun songs actually saying Ganondorf
tried to steal their song.
https://www.youtube.com/watch?v=rhV7PJOgvMY
If Ganondorf actually had that power already as suggested by those who want to downgrade him, why would he feel the need to steal it? You could argue that the Triforce of Power could have given him that power of the sun song but that in itself is also huge speculation with no evidence. The only thing that we know for sure what the ToP grants, is heightened stats to an unknown degree and maybe immortality. The rest could have been Ganon's original power just powered up by the triforce. Therefor I suggest that we rule out time manipulation.
Ganon had used telekinesis more than once:
1) Ocarina of Time: His giant floating castle+ levitating princess zelda's crystal.
https://zelda.wikia.com/wiki/File:Bridge_to_Ganon%27s_Castle.png
2) Both Ganon and Zant(who gets all his powers from Ganon btw) throwing away Midna:
https://www.youtube.com/watch?v=BDA7RNjeZ10
3) Him levitating could also be considered a form of tele.
Although him using tele on a planetary level is also a little iffy, simply casue he did this feat off-screen and it would be weird for Ganon to rotate the planet with TK everytime Link approaches the Forsaken Fortress.