It is possible to plug your shield into your PC and sideload a new launcher which doesn't have ads, it's not too difficult (tho installing adb is a hassle).
I heard on reddit that if Nvidia even hints that this is possible, they violate the license agreements with Google, and then Google is allowed to yank the play store...
I heard on reddit that if Nvidia even hints that this is possible, they violate the license agreements with Google, and then Google is allowed to yank the play store...