I personally find it to be perfectly readable. I've heard of people with issues with white text on a black background, but I don't fully understand it. Do you have astigmatism?

Really? I generally very much like to have a lot of contrast, but too much can definitely hurt my eyes.

What colors were you seeing? It's light white text on a black background for me-- both super common and plenty readable.

I mean, I'm not a designer but it was interesting enough to call out.