If you nean ALBW. I guess it was a good idea to make Yuga the true antagonist,everybody was expexting pig blue Ganon to be the final boss and that was an unexpected surprise.
The problem is the villains Nintendo makes for Zelda are boring beyond their design only Vaati and Majora stand out.
And this was the expected return of Ganon in HD since TP. What we got is a yawning fight and mediocre sequence.
But the problem isn't that he is not a character. Ganondorf barely had characterization beyond OoT and WW. The problem is that Nintendo doesn't know what to do anymore or they failed the execution of Calamity Ganon this time,because it looked menacing as hell on Hyrule Castle
I do consider ALBW to be mainline, so when I say "last two mainline games", I'm referring to it and BOTW.
There's nothing inherently wrong with the bestial approach. Indeed, having Yuga take control of Ganon in ALBW was a good idea that made the most of it.
My issue is that it robs Ganon of any defineable character traits outside of being a beast. It's not an issue in ALBW because Yuga takes the mantle.
I thought it was by far the scariest/creepiest incarnation of Ganon yet. If they wanted to make him look like a horrifying monster, they succeeded.
The concept of Ganon being reduced to a mindless force of nature is one they pulled off well in BOTW.
The problem is that, at least for me, Ganon is little more than this in BOTW's main narrative. There's nothing to him apart from being a monster born of malice. That's fine, but I didn't really feel any investment in him as a villain.
Now you could say that him bringing ruin to Hyrule is investment enough - but I feel this is mostly viewed through the lens of Zelda, Link and the other denizens of Hyrule. Ganon's calamity is essentially a plot device with which the other characters react and respond too. Ganon is a means to an end in terms of the story, and his lack of characterisation reflects this.
Again, there's nothing wrong with that. In many ways it's a fresh approach, I feel it's just personal preference on my end.
Take Ocarina for example. Ganondorf takes over and brings Hyrule to the brink of ruin - and we see how this effects Link and others in Hyrule. That Ganondorf has a defined, if incredibly basic, characterisaton provides a degree of investment in defeating him. He doesn't feel removed from his own villainy, which is how it feels with BOTW Ganon most of the time.
I suppose if I were to sum it up, I prefer to storm the throne room and see this...
...as opposed to what we got in BOTW. TP might not be the best example since it's the worst implementation of a villain hijack in the series, but at least he doesn't feel completely removed from proceedings.
EDIT: This section wasn't aimed at you Crayolan! It just flowed better this way.
???
Most recent mainline game: Breath of the Wild's Calamity Ganon, where he's very much a rage-filled beast with little to no humanity.
Last mainline game: Skyward Sword's Demise, "proto-Ganondorf" as he's sometimes called, is not a mindless beast at all.
Second-to-last mainline game: Twilight Princess' Ganondorf has four forms, only one of them is beast mode. The other are possessed Zelda, Ganondorf on horseback, and then a straight up sword fight with Ganondorf.
If Link Between Worlds counts as a mainline game, Ganon/dorf isn't even in that. And if we go back further we have Wind Waker which is probably the best most articulate Ganondorf we've ever gotten. I'm actually struggling to think of any other incarnation of Ganon that is a "mindless beast" outside of BotW, and even then it does progress his character since a little as we learn he was so full of hatred and malice at that point that he gave up on regenerating a human form to become the Calamity Ganon creature and then Mega Ganon.
I personally count ALBW, and Ganon is definitely in it:
https://youtu.be/FJPglIdd6pg
I was counting it and BOTW with regards to him being a mindless beast. You yourself explain why I didn't include the other titles.