halation (bleeding of the text into the background) happens for all people with astigmatism with white text on dark background but severity will obviously differ depending on your personal environment.

But given that about 50% of people have some form of astigmatism dark mode default has been a horrid trend.

I can read it for like a minute or two. After that I get halation issues and the white text seems to start burning into my retina or something.

It's not so bad for a UI like eg Spotify but anything with actual text content is an issue.