Whats the reason for Google having SEO tutorials for users?
Why does Google give SEO advice? Is there a strategy behind giving webmasters SEO advice? Why Google teaches people to learn about SEO?
That's part of the strategy
In theory, it would be more profitable for Google if more sites ranked poorly so that they would buy adverts. This, however, is a poor long-term strategy. By making the web experience better, Google attracts more users and the likelihood that these people will click on the adverts increases. Google also offers a lot of SEO advice that webmasters can use to improve their sites.