There are times when building a Drupal site you need to dynamically point to an asset or resource that may not be saved in the database but instead is located somewhere in the site's file system.
As a Front-End developer, working with Twig and Drupal is a pretty liberating thing which presents all kinds of posibilies, but it can also open the doors to breaking things Drupal counts on.
Headings are normally used for page or section titles and are a big part of making your website SEO friendly and more accessible. For these reasons, headings need to be carefully planned.