Recently, Yahoo finance newsletter have forced white background even in dark mode. This is completely unusable when reading in low-light. Even "open in webpage" shows the bright white background.
I did manage to find iphone accessibility "smart invert "to force it to dark mode. For whatever reason this fixed the yahoo finance newsletter, but the daily "yahoo news" is still stubbornly in white background. This is a recent change in the past few days. Suggest put it back so folks can correctly use dark & light mode according to their preferences, room lighting, and personal vision accessibility needs.