Comment by codeslinger

IANAL, but: It would appear to me that the author doesn't understand the GPL very well. If my code is BSD licensed and yours is GPL, I can submit pieces of my code to your project but if I take pieces of your code into my project, my project is now subject to the virality properties of the GPL and itself becomes essentially licensed under GPL. This is where the author seems confused: if I subsume GPL code into a BSD-licensed project, my project becomes licensed under GPL. Given that I chose the BSD license for my project I'm assuming it would now be obvious to the OP why this might be onerous.