I understand the objection to the general "why write X when I can see X" point. Obviously not everyone who can read some text can also watch a video.
In this specific case though, is conveying the color of the sweater to people who can't or don't watch the video important? Why mention the color of his sweater, but not the color of his eyes, his hairstyle, or any of countless other unrelated visual details?
Trying to put myself in the shoes of someone using a screen reader, maybe these little details give some extra context which, while irrelevant to the topic, help to give "color" to the story which I, as a person who is able to watch the video, am taking for granted?
In this specific case though, is conveying the color of the sweater to people who can't or don't watch the video important? Why mention the color of his sweater, but not the color of his eyes, his hairstyle, or any of countless other unrelated visual details?
Trying to put myself in the shoes of someone using a screen reader, maybe these little details give some extra context which, while irrelevant to the topic, help to give "color" to the story which I, as a person who is able to watch the video, am taking for granted?