The article makes the point that,
in practice, permissively-licenced projects see
more contributions back. Copyleft projects are being rewritten as proprietary instead (with a few exceptions like Linux, which are too big to fail). The end result may be even worse for the user, if the proprietary alternative ends up being the most developed one, grows an ecosystem and a network effect, and eventually everyone is forced to use that. There's plenty of examples.
It's not about "fairness". It's about reality and survival characteristics.
As a user, I care about my freedom too. But permissively-licenced projects give me enough freedom to choose them over copyleft projects that are even slightly worse in quality