> The Winamp Collaborative License is a free, copyleft license
also from that license text:
> 5. Restrictions
> No Distribution of Modified Versions: You may not distribute modified versions of the software, whether in source or binary form.
Which means that the Winamp Collaborative License is neither free nor copyleft.
What copyleft actually is:
> Copyleft is a general method for making a program (or other work) free (in the sense of freedom, not “zero price”), and requiring all modified and extended versions of the program to be free as well.
https://www.gnu.org/licenses/copyleft.en.html
Releasing proprietary software is whatever. 'Shared source' and similar dilutions are one level of bullshit. Abusing and diluting the language of the free software movement is a step beyond that.
This kind of 'open-source' is actively harmful to an exceptional degree and absolutely deserves to drown in ridicule. A lot of the mocking issues were unfocused or low-effort, but I can't really complain about their function or intent.