Ganondorf's buffs this patch are a lot better than some might think.
Warlock Punch armor buffs are whatevs. It's not a bad thing, but it's not going to change much in singles.
Landing lag changes are always nice. Nothing much to say about those besides D-air getting two frames off, which is nice for combos.
N-air ends faster, which makes his advantage state even better, especially offstage. That he can act before he hits the ground with FH N-air is a huge boon to his neutral.
Dark Dive finally has some reward for landing it (not as much as it really should have but I certainly don't mind if my ice cream doesn't have enough sprinkles), giving him a stronger offstage, better platform pressure, and decent OoS option. And it's a grab that can kill, a big deal for Ganon.
The real sleeper here though are the changes to D-air. The entire hitbox was shifted downwards, meaning FHAC D-air (D-air has to be slightly delayed) can now reliably* hit almost all human-sized-or-bigger characters, giving Ganon an immensely rewarding and safe roll punish, something he was sorely lacking.
I don't think these changes revolutionize any of Ganon's matchups, and a lot of other characters got really big buffs, so I wouldn't really say his position has moved much. I do think almost all of his matchups have gotten a bit easier though.
Even from an unbiased perspective, these changes are really, really good. They're small but focused, allowing more varied, interesting strategies for the character while addressing their crucial flaws. This patch makes me hopeful for the next one, not just for Ganon but the meta as a whole.
*This was possible since the 3DS days, but the timing was so precise that it normally wasn't worth going for.