Yep very fair, but it would have to be assumed the AI could differentiate, which is not necessarily trivial. All of this would be much easier if there was some

Yep very fair, but it would have to be assumed the AI could differentiate, which is not necessarily trivial. All of this would be much easier if there was some "standard" for writing news, sectioning off opinions that derive 'non-obvious' conclusions, linking primary sources, etc. But there isn't, and you would have to censor those who did not conform if there was one, which is not a good solution.