Probably bad form for the reporter (especially a brand new one like me) to change the priority, but I thought this important enough to do so. I haven't read any of the news posts, but there's a possibility they lead to malware or phishing sites themselves.
Thanks. I notice that has removed them from the RSS feed at https://www.blender.org/feed/ (although they may previously have been sent to RSS subscribers, which is how I first noticed them). Still appearing in the index at https://www.blender.org/news/ too, even if each link 404s. I don't know if that will clear itself up automatically?