I think you missed the slightly tongue-in-cheek tone of the post. The author is an indie filmmaker so it's his job to draw parallels between movies in order to highlight his probable above-average attention to detail in movies.
> it objectively reduces readability
Would love to get some pointers for good reads on this. I've always felt the opposite.
Yeah, I use Readability in Inverse mode myself so I can get my reading in dark background and light text.
To be fair, that is not white on black, it's very-light-grey on dark grey. Personally I find white #FFFFFF on black #000000 hard to read too, but very few sites use such colors.
Light grey on black, which this blog uses, seems perfectly fine for me.
Might there be differences of opinion because of differences in monitors? I'm using Eizo S-PVA, so I might have it better than those with cheaper LCD monitors.
Ironically enough, the first thought I had when I visited his blog was "oh god no not another white text on black background site!". But I'm not going to write an article about the trend of light text on dark background, which would actually be a more valid complaint because it objectively reduces readability, while the orange+blue palette is just taste.