When XavDub contacted the German car maker, the company responded that GrapheneOS “is not an official Volkswagen offering” and advised them to contact their OS provider instead.
This is the only official word from Volkswagen in the whole article. To me, this reads less as "We are blocking GrapheneOS users" and instead "GrapheneOS is not something we give any official support" which I think is a key distinction.
It's not clear what's different in the update that doesn't work with GrapheneOS, whether it's an API call that doesn't work or if they've implemented the Play Integrity API - but I think this article is a bit sensationalist and everyone's reacted only to the headline.
