On March 17th, 2017, DMOZ officially shut down.
Since the human Open Directory Project (ODP) web directory is not more, a few months later, Google decided to stop using DMOZ titles and description in its search results.
Google uses DMOZ when it felt no description was more useful than what was available from the page's meta description or the website's content.
According to Google:
What this means, websites no longer need to have the NOODP robots directive on their web pages. That directive told Google to opt out of using the DMOZ description; with ODP gone, Google has no use of supporting a service that is no longer updated.
Google said that "with DMOZ (ODP) closed, we stopped relying on its data and thus the NOODP directive is already no-op." Google has been supporting the NOODP directives for at least since 2006, and used DMOZ's directives since before that.
Since Google is really depending on web pages to understand their context, Google strongly recommends that webmasters pick the best title and description for their search result snippets.
The company wrote that every web page of a website needs to have the "title" tag. The titles should be branded, descriptive and concise. Websites should also avoid keyword stuffing, avoid repeated or boilerplate titles. Webmasters should also make use of the robots.txt file.
As for the web pages' description, webmasters need to make sure that their website has a high-qiality meta description to differentiate pages. Google also encourage websites to have their descriptions.