I just tried CIMG, what a nightmare. When you download it, all you get are a bunch of header files. No lib or dll. And trying to make any of it work is a pain. After making my computer run slow as heck and not even ever working I just gave up and deleted the mess.
Lots of Boost libraries are just header files as well. It's because they use only template classes, which have to be defined when you use them and thus don't use source files (which also means you only pay for what you use). If it didn't work, then I imagine you probably did something wrong.
He says x. Then claims he didn't mean to imply x. So does he mean x? No, apparently, he means y.
Ragging on Lumpkin has been justified as of late because some of the things he says "imply" incorrect information which is bad as it causes confusion and misinformation to spread.
How does "I used to be an SDL fanboy until I used OpenGL" not make sense? It was in reply to the first comments, which the OP said he was planning on using OGL later on.
It was a positive comment towards OpenGL, not necessarily bringing any lib down.