If this becomes endemic across all the manufacturers I'll be ripping out the GPS aerial or fuse as necessary and they'll data mine a null database. I'll find a way to fit a DIN stereo. No I don't buy cars new enough for this to cause warranty issues. If it starts becoming impossible to do, a classic car is going to be anything before 2005 or so, and I'll take one of those. :)
I don't even listen to commercial radio in the car, or anywhere, because the ads annoy too much, and there's plenty of BBC stations.
Cars have been sending data back to manufacturers (which include location, odometer, etc) for a while now and there's almost no way to disable it nicely (destroying the radios voids warranty):
http://www.bbc.com/autos/story/20160809-your-car-is-not-your...
If I remember correctly, something like this likely won't void the warranty, except maybe the warranty for electronics in the car. There are pretty strong laws in the US regarding car warranties.
I don't even listen to commercial radio in the car, or anywhere, because the ads annoy too much, and there's plenty of BBC stations.
TL;DR over my dead body.