To me, OLED being self-emissive is a far bigger deal than the contrast ratio. With LCDs, even the laminated ones in MacBooks, you get backlight shimmering, bleed, halos (especially with Mini-LED), and general inconsistency. With OLED, the pixels are a single, nano-thin layer, the display looks directly printed onto the surface (because it is), there are no backlight issues because there's no backlight, and there's no polarization or enclosure to create viewing angle artifacts. (Note: QD-OLED is inferior in this regard, especially with ambient light, but that doesn't bother me that much; WOLED however is trash.)
The OLED iPad Pro is one of the best screens I've ever seen, besides the awful pixel density. Even if deactivated pixels weren't fully dark, it'd still be far superior to any LCD.
OLEDs have a lot of great properties, but I’m still on the fence when it comes to building them into laptops. On phones and tablets where usage is intermittent, usually shortish, and content is constantly moving they’re well suited, but with a laptop screen that in some cases can be turn on for 12+ hours and is displaying the same static content for large chunks of that, I’d be worried about burn in.
Maybe it’s not an issue with tandem OLED and strict binning though.
I have a non-tandem QD-OLED I used as a desktop monitor for some months and it's totally fine. If you're part of the Apple hype cycle and you replace your $7,000+ laptop every year, you'll never see burn-in.
The OLED iPad Pro is one of the best screens I've ever seen, besides the awful pixel density. Even if deactivated pixels weren't fully dark, it'd still be far superior to any LCD.