While it's definitely a lot of work, the author of the sibling post is right: Getting rid of Google services is fairly easy. The issue is rather that you might

While it's definitely a lot of work, the author of the sibling post is right: Getting rid of Google services is fairly easy. The issue is rather that you might still want them in some cases. Then, it's often not so much a security issue but a rather a matter of getting them to work with your restricted setup.