Reading the overall good "5 Keys to Accessible Web Typography" by Matej Latin, I can’t help to point out the CSS font-smoothing part where Matej recommends anti-aliased font-smoothing for light text on dark background.
If you’re looking for a lighter text, go for a lighter weight. Font-smoothing will not work for every user, you’re just "fixing" it for the few. It has also been removed from the specification. Yes, you’ll need to load an extra weight. But variable fonts are at the horizon.
Zach Leatherman visualise font-smoothing in his post "Laissez-faire Font Smoothing and Anti-aliasing".