To actually read the text: https://archive.is/EwSWT
More likely the author wants to be paid for his work. If he wanted to offer it for free there are plenty of alternative platforms to publish on.
It was published in the Boston Globe, a commercial organisation. I think it's a reasonable conclusion that the author gets paid for their work. He has been at the paper at least since 1979 according to the article.
Then it's behind a goddamn paywall, lol.
I was ready to make the snarky comment "This is what I want to say: Pay $1 for 6 months subscription!"...