It's an 85 word comment. Unless the author is unusually slow at typing (which is quite unlikely given the largely programmer-based audience here), it probably took them about a minute to write the comment.

Lack of capitalisation interrupts the way you read a block of text. People make poor design choices all the time, and this is one of them.

More more poking fun at the fact that he took more time to reply about why he wont read the article (which is ridiculous) than it would have taken to just read it and respond with valuable input instead of being snobby about it.

Reading this article, let alone reading and responding with valuable input, takes more time than writing a two-line comment, and not just because it's hard to scan sentences written without capital letters.