Exactly. This is the specific reason why I ask if these portal pages, the DNS hijacking violates some RFC.
I do understand the desire and even the need for some form of authentication, or notice you are on someone else's network and ought to read what the terms are.
But the behavior of how that is implemented today is totally obnoxious, especially since for the most part, the terms and agreements are boilerplate intended to satisfy some lawyer, and functionally get in the way of why the vendor or site provided the wifi access in the first place.
I do understand the desire and even the need for some form of authentication, or notice you are on someone else's network and ought to read what the terms are.
But the behavior of how that is implemented today is totally obnoxious, especially since for the most part, the terms and agreements are boilerplate intended to satisfy some lawyer, and functionally get in the way of why the vendor or site provided the wifi access in the first place.