alt Hacker NewsThat's because it's not an article, it's a section of Butterick's book. (He also has a book at https://practicaltypography.com/ that isn't targeted at lawyers, and I think a lot of the content overlaps.)
I agree that he's a bit too mean to mainstream fonts, though.
The problem with some of the less mainstream fonts is that they are not always readily available/transferrable. I don't tend to have issues with TNR going funny in another format. As for Helvetica, I don't think Microsoft supports it and created Arial which is an inferior version of it.