Or the official apps right, that page is just about browsers (and implicitly unofficial apps)? So you could have the Kodi & Netflix apps on an Android TV (e.g. Nvidia Shield) device and have 4K Netflix.
I imagine Netflix gathers a lot of viewing data, and I can see a time when ads make it into the streaming platforms natively. Cable TV started out as an ad-free offering, and now it's almost 50% ads.