I agree with the author: It sucks. But so does white font on a blue background, since we’re also talking about readability. At least they got that right!
No, those are mostly fine, but a blog has different requirements than a text editor. I just find it a bit hard to read, because for example bright pictures really stand out, and I think he’s using different shades of white (or grey) for the font in different elements (like a paragraph or a quote).
I just discovered that it’s possible to switch to a light theme, which is much more readable. Still would’ve preferred a nice serif font, though.
