Features like Google Search, or Discover, in the pre-installed Google application ignore the user’s default browser choice: links to websites outside of the application are always opened in Chrome, regardless of the default browser. This is a widely used application, with additional entry points from built-in features such as the search bar on the home screen and app launcher. Each time it opens a link in Chrome, a user is driven away from their default browser.
All built-in applications and affordances that open external links should open them in the user’s default browser.