I also get the sense that the author has an inherently negative view of non-OSI-approved "source available" licenses -- and in particular the Business Source License, which he uses as a counterexample twice.
Yet, OSI cofounder Bruce Perens helped improve that license and specifically said "I feel it’s worthy of my endorsement. The new BSL will be a good way for developers to get paid while eventually making their works Open Source." [1]
Why do so many vocal people in the Open Source world have a much more extreme worldview than even an OSI cofounder?
[1] https://web.archive.org/web/20250629110730/https://perens.co...