I never meant to say that making a storyboard was the only way for a writer to help the artist. It was just a real-life example that I could think of a professional writer-artist duo that actually worked in the long run. In the end, what I wrote was from the writer's perspective, not the artists.
Some artists like a pre-made storyboard because it can help them have an IDEA rather than just a script, while many others work well WITH a script only. Besides, as an artist, you have creative liberties to fix things along the way. If you looked at #3, I said writers should be knowledgeable for both script-writing and storyboard, that way you can help the artist in what they would like from the writing side of things.
The basic point is that sometimes, writers can do some more work their end if you both want something good to come out of a compilation. Each artist is different in what they would like in the writing department. And since art is really the hardest part, making it easy sometimes for the artist should be something you're prepared to give as a writer.
As for the "cannot unsee it" part, as an artist, you can change anything from a storyboard given to you. Like the Death Note Duo, their storyboards are often like day and night. The panel placement is more oftentimes changed and the "errors" are flattened. Because sometimes, as the artist, you have no say in how the writer, who is paying you, gives the story to you.
I would personally LOVE to have someone come up with sketches and storyboards with me rather than just letting it go on its own. As long as I can have some creative liberties in the end product, maybe improving character design, fixing dialogue, etc. as long as I communicate it with the writer that something wasn't perfect with the character's actions or maybe something in the story felt off.
Really I was focusing on how working together with the writer/artist closely, as if any miscommunication at any moment can let the project fail. While some may think, "oh I'm just hired to do some artist work so I'll just do whatever", that doesn't always help the project grow. Yes, it all depends on the artist and the writer. But I've heard of many compilations, even some that I've been a part of, that fail because it felt more like a commission, rather than a dedicated project with both sides working together at every step.
And sometimes, some writers just don't know how to write scripts. They might have a full-on novel that they want you to work from. Storyboards was just an example that writers can use to make the transition easier.