IANAL, but... ethically (I am not stating a legal opinion), you're just linking to a public URL, which doesn't feel that awful to me. They should really have a

IANAL, but... ethically (I am not stating a legal opinion), you're just linking to a public URL, which doesn't feel that awful to me. They should really have a login on anything they want to gate access to. As for the legal warning, I feel like their lawyers are about as competent as their web designers in that regard. But, that all said, is this _really_ the hill you want to die on? They can be wrong and still cost you a fortune.