Google Mobile-First Indexing
Google is sending out the messages via Google Search Console with “mobile-first indexing issues detected” notifications to webmasters. In those emails, it communicates the issues Google has when it comes to moving that site over to mobile-first indexing. This mail also says “Google expects to apply mobile-first indexing to all the websites in the next six to twelve months.”
Google News: Content Scrapping
"there's a lot of scraped content over the internet which has minimal visibility, it's not always worth losing sleep over it."