Netflix confirmed the issue.
Popular streaming app Netflix has issued that removes access to all unlocked/rooted Android devices – though this refers to new devices who do not have the Netflix app installed. If it’s already on your device, then it will still work.
Netflix explained that the new version of their app for Android now relies on the Widevine DRM which is provided by Google. This means that playback would only be possible on devices that are Google-certified, meaning the ones that have official firmware installed. This means that if your device’s software is altered like how it was when it is rooted, the Netflix store will no longer be accessible.
It also added that the latest version will only work with devices certified by Google. If your device is rooted, then you won’t see the Netflix app available for download on the Google Play Store.