Am I correct in inferring that, on your view, "X is patriotic" entails "X believes X's country is good"?

So I suppose patriotism is a kind of love. We could call a love good if the lover has good reason to think the beloved worthy of love and if the love is on the whole a benefit to lover and beloved. Your initial remark was that that patriotism can be good independently of the goodness of its object, because it can be a benefit. I think this captures one half of the above, both leaves out the 'worthiness' part. In other words, I think patriotism has to involve something like knowledge of the moral goodness of one's country. It's in that respect that patriotism is concerned with truth, rather than just with benefit.