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.

Yep, it was a comment in jest.

I use the readability button and "Dark Background/Light text" on Firefox when things get a bit too wild and bright for me.