Overall an interesting post, thanks for sharing.

Nitpick for OP (@palant): on mobile Safari (haven't checked any desktop browsers), the images embedded into the post appear stretched out vertically (i.e., too "slim"). It is still technically readable, but very noticeable and jarring. This only applies to the images when embedded, opening direct image URLs in a dedicated browser tab renders them properly without any stretching. I suggest checking CSS, but that's just my first guess and could be entirely wrong.

I think just keeping the same horizontal size of images, but reducing the vertical size, would make it much more aesthetically pleasing + readable.