In fairness, they are. The entire industry sans Oracle is against Oracle on this one.
https://www.supremecourt.gov/DocketPDF/18/18-956/89487/20190...
https://www.supremecourt.gov/DocketPDF/18/18-956/89487/20190...
That's a really effective framing for any company in a highly publicized legal dispute. If it happens to be true for Google in this particular dispute, that's nice but not necessary for the PR speak to be advantageous.