I have seen the Android brand disappear over time. First, it was the Nexus, then Samsung came with the Galaxy brand, who made Android less relevant. Now, Android is just invisible.
I thought Google was losing a war against its partners, but I finally concluded that it cannot be just a coincidence. It is not just a trend. It is a deliberate effort. By Google.
Google wants Google to be the brand, not Android.
Update: I can't find any mention of Android in the original Google Nexus site, apart from once in the specification.