Do you need to update popular pages to keep them popular?
It’s a really good idea to update popular website pages when anything changes. Updates, new statistics, broken links, or adding more relevant and more internal links are good practice. Try to keep the content as relevant as possible and update it whenever you can. We have an SEO training page and since publishing, Google removed Google+ so we edited the page to reflect this. It’s just good content management and it will show Google you care about giving the correct and updated information.