I would not be concerned. If you're legitimately reporting on the news you may eventually earn links from historical retrospective pieces across the Web. I write a lot of such content and because all the major news sites follow such bad SEO advice, they remove their old content - which often was a primary source of information. So I find myself linking to the Wayback Machine's copies of those articles, or to secondary sources that copied them illegally. Just because it's short content doesn't mean it's "thin content". That isn't what the search engines mean. And just because it's old news doesn't mean it's no longer relevant. It just relevant to history, and history should not be deleted because someone says that is what is best for SEO. People like Neil Patel promote solutions for non-existing problems. You need to look at your data to determine if you have a problem. If anything, old, deeply buried content is far less likely to cause SEO problems than more recently published content.