The comment syntax works great with regular CSS as well. It's a style of writing CSS. SASS/SCSS/LESS are methods for generating CSS.
I think that there's a pretty big short-sighted buzzword obsessed culture associated with CSS. We need to realize that "CSS" is a lot like "Scripting Language". There are many styles of writing scripting languages, many scripting languages, and many implementations of scripting languages. It doesn't take more than 15 seconds to read one sentence and understand what it means. Let's look past the name.
I think that there's a pretty big short-sighted buzzword obsessed culture associated with CSS. We need to realize that "CSS" is a lot like "Scripting Language". There are many styles of writing scripting languages, many scripting languages, and many implementations of scripting languages. It doesn't take more than 15 seconds to read one sentence and understand what it means. Let's look past the name.