Most mainstream Linux distributions (including Debian), as well as macOS use vim as the default vi. As you noted, the BSDs still default to (n)vi. Another place

Most mainstream Linux distributions (including Debian), as well as macOS use vim as the default vi. As you noted, the BSDs still default to (n)vi. Another place where it vi (not vim) is still used is in embedded systems and stripped down/rescue/installation, which often use Busybox (which includes a vi implementation).