I concur with everything he has written in his post... but one thing I'd add to the points he made is my annoyance with the implication made by many that proponents of permissive licensing care about freedom more than people who use copyleft licenses.
People who really care about freedom care about it for EVERYONE, and licensing that maximizes freedom for everyone trumps the "strings attached" in that regard, that is such a simple thing to see that it challenges credulity to think that someone who cares about freedom could say otherwise.
If you want everyone to use permissive licensing because you want to use free software inside of locked down programs you produce and are frustrated that great copyleft software doesn't let you do that, fine. I can respect that position because I've experienced the same problem. But please get over it and find some non-free solution to your problem, instead of trying to undermine the ideology of people who actually care about freedom just because you are jealous of the quality of software that has that ideology attached to it.