But again, the sword disappearing wouldn’t really make sense. The sword itself is still a physical object. We see this when Fi is inactive - the sword spirit isn’t there, but the blade itself still is. On your point of Ghirahim not being able to exist without Demise, that’s objectively untrue or...
But you understand how this is different, right? By this logic we can’t make any comparisons because if we get vague enough we can make strawmen arguments like “Oh, you’re comparing their designs? Well guess what, the Four Sword and the Master Sword both have blades. I guess they’re the same now...
Why are you assuming he’s disintegrating? Just because Demise got his ass kicked doesn’t mean Ghirahim is automatically felled with him. We see Link get his ass kicked numerous times in Skyward Sword and in his death animation the Master Sword doesn’t verp out of existence. I don’t see why...
While this was already mentioned, I do think he is the Trident that was in the Pyramid in FSA that allowed Ganon to become the King of Darkness. It’s stated to be a “tool used by an ancient demon,” and, considering the similarity between its design and the rapiers (or Demon Tribe Sword if one...