>>717300062
The way Dung Eater's chest armor words it, he probably lost sight of grace a long time ago. Goldmask's meanwhile doesn't word it as grace at all, but as "brilliant inspiration." It's definitely a clue-in that the character has an ending available to them but it's also not a sure thing since Fia and others don't reference that sun theming or the blurb about "where that guidance will take them."

You can have ambition as a Tarnished, whether you're seeing grace or not doesn't really have any bearing on that. It's more seemingly whether you've become disillusioned with the actual Elden Lord throne, or disillusioned with Marika, probably moreso the former because you as a player can take basically any approach you want in regards to Marika including spurning her outright.

The mending rune is more of a key-item slot for whether you like their idea of what the Golden Order or the world's concept of order should be than it is an actual physical thing, hence each mending rune is literally and specifically for each faction that has an available ending.