And, your point is? Google explicitly stated the would be pushing updates. They never said they wouldn't change things. Also, just look at the history of their products. They inject ads into everything they make. They are an ad company, that's where their revenue comes from.
Android regularly was originally packaged as part of Google’s advertised “ Google Experience Devices” and “Android One”, where they advertised no bloatware and adware unlike other Android manufacturers.
The Nvidia shield outlasted every android tv device from Google and maintained a near pure experience as promised, for a higher upfront price.
I understand the history of Google and their products. Where they change what is offered is still not ok because you’ll never really know what you’re getting into, nor what Google may launch and cancel next.s
Lots of people have a graveyard of cancelled Google devices.
But Nvidia was able to be one of the first 4K certified Android tv devices for Netflix and keep it that way.