This is why Apple TV 4K Siri Remote scrubbing doesn't work on Disney+, other apps
Some features of the new Apple TV 4K Siri Remote won't work properly if a video service, like Disney+ or HBO Max, uses a custom player instead of Apple's tvOS API.

Credit: Andrew O'Hara, AppleInsider
The new Siri Remote has a feature that allows users to scrub through content by using the touch-sensitive control pad as a "scroll wheel." However, some users recently noticed that the feature stopped working on HBO Max after the service ditched Apple's tvOS API.
On Friday, Disney+, which also caught flak for not supporting the new Siri Remote capability, confirmed to The Verge that the scrubbing feature isn't available at all on its own service. That's because, like HBO Max, Disney+ uses its own custom video player.
Scroll wheel scrubbing is only available to apps that use Apple's native media player, and it isn't clear if such features will be made available to third-party player platforms.
Disney+ told The Verge that it plans to develop scrubbing support if and when Apple opens access to control APIs.
Along with HBO Max and the Disney streaming platform, users also reported Siri Remote compatibility issues with Peacock. HBO Max users have reported additional bugs with display quality, Siri commands, and pausing video content.

Credit: Andrew O'Hara, AppleInsider
The new Siri Remote has a feature that allows users to scrub through content by using the touch-sensitive control pad as a "scroll wheel." However, some users recently noticed that the feature stopped working on HBO Max after the service ditched Apple's tvOS API.
On Friday, Disney+, which also caught flak for not supporting the new Siri Remote capability, confirmed to The Verge that the scrubbing feature isn't available at all on its own service. That's because, like HBO Max, Disney+ uses its own custom video player.
Scroll wheel scrubbing is only available to apps that use Apple's native media player, and it isn't clear if such features will be made available to third-party player platforms.
Disney+ told The Verge that it plans to develop scrubbing support if and when Apple opens access to control APIs.
Along with HBO Max and the Disney streaming platform, users also reported Siri Remote compatibility issues with Peacock. HBO Max users have reported additional bugs with display quality, Siri commands, and pausing video content.
Comments
TV (hardware) streaming platform apps will skirt API's to disrupt the experience that Apple wants for their users even something as small as a scrubbing feature. This isn't the first time or last time there will be these forms of harassment plus I'm sure everyone thinks they can build a better video player to spy on their subscribers.
Sadly, that’s not how software development works with other companies that uses Apples’ platform to build apps.
Third part developers are not just sitting/standing idle dwindling their thumbs and can jump on any new shiny OS or API released by Apple right away. It will be in pipeline and supported but not now, like how Americans (most first world people who open wallet for any new gadget by Apple) are entitled to think - I want it NOW!
just saying your NOW thinking is a problem. But trust me it’s no fun with broken software that support all functions of new OS.
my 2c.
I wrote my own that supported swiping to scrub through the stream, among other things. I wouldn't be surprised if Apple announces those API's at WWDC next week and all this hoopla is over nothing, presuming the dev teams adopt the new gesture recognizers.
Now I'm thinking it wasn't even worth it to upgrade to the new TV/Remote. Maybe should have just gone 100% remote on my iPhone.
+10 seconds... -10 seconds... Yep, it works.
If apps are crap, people will stop using them. The issue will fix itself.
MLB is another that ditched the native tvOS APIs to roll their own. John Gruber (Daringfireball) has complained about it as well.
YouTube also abandoned the native tvOS video player, in favor of their lousy console port, in the name of uniformity with other devices they support. So boneheaded. It’s like the Java apps of yesteryear and their crappy non-native UI controls all over again, but video players.
They do it so they can spy on user activity, log interactions, capture usage behaviors, run their own A:B testing, etc.