Did you skip over the third one in the list? The two you mention are poor relaying of information, the titles designed to grab attention rather than properly convey what was done. The third had no attention payed to a blatantly false claim, and was only edited to better reflect the actual contents later. Likely after this article in health news ran. Do you think they're likely to get enough reports to care about a fringe article like the one originally liked?
Your example that this AAAS organization edited some content for accuracy gives us further evidence that they are paying special attention to the content that they post on the website, even after posting, and that they are willing to make corrections based on fact.
Therefore they are vetting their content and the website is a legitimate source of science news.
It is interesting that you are trying to debunk a traditional and respected source of science information with internet opinion which lacks contradictory studies or experimental evidence to the experimental evidence which the organization references. That is not how science work. If you think something is false you must prove yourself through experiment.
However, your efforts at disparaging this organization appears fruitless. It most certainly is, and remains, a well respected source of science information.