We know WordPress in nothing inherited to be SEO friendly from the PHP so we can’t say WordPress is SEO friendly, rather we can say that SEO plugins and add-ons makes it SEO friendly. Therefore, setting SEO plugins appropriately makes it meaningful in the eyes of bots and humans like setting “non-indexing” during development phase and after allow bots to index site is useful for bots while customize URL make sense for both, humans and bots.
We are living in a world of misconceptions that WordPress is SEO friendly, but in reality WordPress is not SEO friendly out-of-box, the WordPress plugins that make it SEO friendly and let you rank high.