Depends on your eyes. For some people the white text glows and gets fuzzy and hard to read. When was the last time you read a book with white text on black pages?
I’m not a fan of dark themes (or the DC universe, just seemed depressing, been a Marvel fan since the 60’s, although, going back through and reading Spiderman through the ages, that got kind of depressing, too, haha), dark themes seem kind of trendy to me.