Read the whole article, though. The author does not advocate for pure black text on a white background on a screen. Your sources cite the useful study concludi

Read the whole article, though. The author does not advocate for pure black text on a white background on a screen. Your sources cite the useful study concluding that pure black text on a pure white background on a screen causes eye strain for folks like me with astigmatism. The uxmovement site, however, jumps to the conclusion that black text on a white background is the worst configuration and anything else that gets a good WCAG contrast rating is better, and sufficient for readability. That's unsupported, seemingly false, and the topic of this article. Their asserting the grey-on-white text in their graphic is more readable than the black-on-white is patently absurd. The appropriate way to decrease contrast is by tinting the background but leaving the text towards the extreme. The author argues that the current WCAG method of determining contrast without considering other factors such as leading, tracking, type size, etc. gives passing scores to inaccessible results, and more recent methodologies are much more accurate, especially in dark mode.