Don't worry. Copyleft has nothing to do with politics.
"copyleft" has everything to do with politics. Just as the article admits, it aims to turn our capitalistic society on it's head, and communist governments the world over are flocking to it.
Not directly, but it does reflect a certain naivety that translates into stupid politics.
It also represents an unsustainable economic idea: give something away free so that somebody else can make a buck on it.
The problem is that development and maintenance of open source code involve real costs. The Open Source model assumes that those costs will always be absorbed by good-hearted programmers, for free to everybody else.
Over time, however, the desire for stability within a company's code base, coupled with divergence from Open Source as companies modify Open Source for their own needs, ends up killing the model.
Eventually, somebody simply grabs the Open Source, locks it down as a baseline, and starts selling their own modifications to all comers.
Copyleft has alot to do with politics. Specifically the politics(policy) of how software is created, distributed, and maintained. It has little to do with politics in the general sense of national politics.
:-P
By the common definition, you're right. Copyright isn't about politics.
But the basic definition (the one I have to know for my major) says yes--politics is the competition, interplay, and/or conflicts that occur between varying groups, peoples, or ideas over the distribution of limited resources and/or power.
The debate of copyleft is politicking. Whether we like it or not is completely open to interpretation.