I'd never read that Google page before. I can't make sense of the section there named The ‘restricted’ licenses. It says: > Third-party software made available

I'd never read that Google page before. I can't make sense of the section there named The ‘restricted’ licenses. It says: > Third-party software made available under one of these licenses must not be part of Google products that are delivered to outside customers. This policy covers all 3 versions of the GPL. And yet they made Android, based on the Linux kernel.