For anyone that owns an OLED TV (always glossy) and an OLED monitor (often matte/anti-reflective), this choice in configurations from Valve was a very, very strange one. With OLED being the primary, visual upgrade for the new Steam Deck OLED, you want to retain as much true black and color vibrancy as possible, and in no uncertain terms, any anti-reflective/matte coating will cause an appreciable hit to both.
For anyone that owns an OLED TV (always glossy) and an OLED monitor (often matte/anti-reflective), this choice in configurations from Valve was a very, very strange one. With OLED being the primary, visual upgrade for the new Steam Deck OLED, you want to retain as much true black and color vibrancy as possible, and in no uncertain terms, any anti-reflective/matte coating will cause an appreciable hit to both.
As shown here by Dave2D, the 1TB configurations will suffer, visually, as a result of the etched display.
If you live with OLED on a day-to-day basis, you know that sacrificing color saturation and the absolute contrast ratio is a price not worth paying.