Given how poorly structured most news stories are today, if they do end up prohibiting the use of the first paragraph, that generally won’t be much of a loss.
Banning all AP content is the safest course at this point.
You know what’s kind of funny - nowadays it’s the second paragraph that usually gets into the “5W’s and an H” (if even then)! Most of the 1st paragraphs are cute little segues that are usually highly editorialized.