This. Service operators have no saying in how you process the response, as long as it doesn’t violate any laws (e.g. redistribution beyond fair use)

But. The end of this arms race is gonna be problematic because of the halting problem. Unlike some other issues, we possibly don’t want to push it too hard here until the society catches up, or we’ll end up with black box programs inside the browsers, handling all aspects of rendering. That would be a wasteful loss for everyone.