Those who didn't notice, the topic has been split from the original thread.Saying that something is bad, is in mostly all cases rather subjective, as such there's no need to call bullshit on things and a normal and less loaded answer would've worked fine as well.
Besides I think it's important to point out the limitation GPL can bring up onto your code and even more importantly the code of those, who'd like to use your library. Since licensing is not a trivial topic, it's common that many don't really understand the implications of their choice in a license.
Additionally as pointed out, LGPL is a lot better suited for such libraries.