It’s deceptively worded, because it kinda happened (at least according to Clarke).

From https://ew.com/tv/2019/05/19/game-thrones-finale-interview-emilia-clarke/

“What, what, what, WHAT!?” the actress recalls thinking. “Because it comes out of f—king nowhere. I’m flabbergasted. Absolutely never saw that coming.”

“I cried,” Clarke says. “And I went for a walk. I walked out of the house and took my keys and phone and walked back with blisters on my feet. I didn’t come back for five hours. I’m like, ‘How am I going to do this?’”

She never says she dislikes the script and makes it clear that she found the story surprising and emotional. Which is true, the story is surprising (not in a good way, but it is surprising) and for her character it is full of emotion.

The cable is fiber optic, which is to say light. Light don’t care about gold and silver. The highly polished lens bit is probably also bullshit, but at least light cares about lenses.