As far as i know the don't work in the same way, cause the Sass variable convert for example the color to the hex code... anyway calling $color1 is not like calling var(--color1)... at the end this is only my opinion :)
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I believe that what he means is that CSS variable are not as clean as SASS ones...
As far as i know the don't work in the same way, cause the Sass variable convert for example the color to the hex code... anyway calling $color1 is not like calling var(--color1)... at the end this is only my opinion :)