My only exception to this article is the section, "People underestimate what open source costs from the maintainer side. It’s not just writing code. It’s issues, pull requests, discussions, people demanding things from you for free. I got spammed like crazy. And now with AI, spamming a maintainer is so easy: low effort issues, generated pull requests, and every single one of them takes a bit of your time and energy"
This is all self-inflicted. Don't take Issues. Don't take PRs. Make the repo read-only to everyone but you. There's zero effort, unless you're planning on keeping all the source on your computer and never push it anywhere. Well, I guess, in that case you're saving yourself from doing a push.
So if you don't want to do all that stuff, that's fine. You don't have to. But don't pretend the only alternative is to close the source.