I don’t agree with the assessment of the OP or the original blog article. Grayjay is Open Source software.
It is, however, NOT FREE SOFTWARE and I do know that organizations like the FSF and OSI do not consider it to be free.
The free status of this software was never misrepresented by Louis Rossman. He blatantly explains that there is a cost to this software and that the license is how he plans to enforce his means of collecting this fee on the honor system.
He also outlines how he cannot; and will not…stop anyone from forking this software and basically removing the payment bits of the code and just redistributing it under a different name. I strongly recommend someone does that…and maybe license that work under a much more unrestrictive free license that FLOSS-Only users might find more palatable.
I get that nobody wants or needs to trust Louis to keep his word. He’s gotta run a business at some point…and distributing this software this way on the honor system might not pan out quite the same way he hopes it will. I do hope that at the point where he and his compatriots choose to stop maintaining the application; that they do immediately retcon this restrictive license; and re-release it under a new, free, and unrestrictive Open Source Software license.