Sometimes YES is all that can be said.
Sometimes YES is all it means.
It means all.
This thing that was said. It has to be said. Now. This way. These words. By this person.
Any other way, it wouldn’t mean what it means.
Anything more, it dilutes.
Anyone else, it risks being a complaint, or an excuse, or a barely concealed self-righteousness.
It has to be this.