The headline should be changed, because it is moving from one closed source repo to another closed source repo, and on HN misleading headlines tend to be corrected even if they're deliberate on the part of the authors.

simonw correctly describes it as "not technically open source" - though OSI doesn't have the trademark, the term open source, capitalized or not, refers to the what the Open Source Definition codifies. There are other terms such as shared source, for this sort of stuff.

The headline should be changed because it was a joke: “Sorry folks, this issue was more of a joke (am I allowed to do that?) but I'll keep the issue open since there's some discussion here.”