It's definitely not a matte screen, but a coating that cuts the worst of the glare. Kind of like a decent phone screen. Of course, I just wanted the storage, and then I put a glass screen protector on right away, making the glare even worse...
Here is a blog post that shows the differences most realistically to my perception of it.
Here is a blog post that shows the differences most realistically to my perception of it.
https://www.louis993546.com/steam-deck-notes/