> It's interesting that the author writes this whole rant about the stupidity of describing cookies as "small text files" and how that's a ridiculous and incorrect abstraction, without realizing that cookies used to be exactly that,

That's... not the point of the article? The point is that whether they're stored on a text file, in a sqlite database or on the blockchain is an implementation detail that tells the user nothing about what a cookie actually is and what it is for.