You can change the wrapper for Safari, but you can't change the actual browser itself. For a lot of people, it comes down to being to run uBlock Origin/cosmeti

You can change the wrapper for Safari, but you can't change the actual browser itself. For a lot of people, it comes down to being to run uBlock Origin/cosmetic and dynamic ad and content blocking (e.g. not a simple blacklist) and running other extensions and customizations.