It's an accessibility problem, especially for people (like me) who have astigmatism. But y'all don't look away from white text on black background to a bright light source (like a page of black text on a white background) and get a "burned in" impression of the previous page in your vision? Lucky you.
Dark mode is fine, please let the user choose to have dark mode when she wants to.
The problem in general is the stark contrast between white and black. My editor is set with a grey background with grey text (or low chroma colors), and it works great.
Dark mode is fine, please let the user choose to have dark mode when she wants to.