I think the main point is really that the bsd license let's anyone including commercial developers use and contribute to your project. Gpl largely restricts your project to educational use. Your main contributors are likely weekend hobbyists.
Seriously, why do some people have such a hard time with this. The license prevents you from exploiting people with software you did not create. Is that such a big problem for you that you got to complain on HN about it?
I use software everyday without needing to exploit someone else in order to find them useful. I don't need to take anything away from someone else in order to be happy. Why can't you?
If your only wish is to release source code, then neither GPL or BSD will ever prevent you from doing so. Take GPL, or BSD, or a combination of them two. Modify if you wish. Release code and everyone is happy. Your own contribution can be of either license, and you have freedom to choose as you like.
However, your wishes are not to write and release source code, but to take someone else software and add proprietary license to it in order to prevent others from sharing or modifying the program. If your goal was only to write and release source code, we would not have this conversation.
It is also why you are complain on HN about it. It is so lucrative idea to restrict sharing and modification of a program, that people will say and do anything they can in order to do so. That is the goal when saying "don't use gpl, use bsd".
I say, use either. I can use code under either because I don't intend to prevent anyone from sharing or modifying the program.
If your intention is add restrictions on other peoples work, then you are taking away the choice from others who want to read and modify the work. This won't benefit other developers, nor will it share knowledge or contribute to developers projects. Making it closed source closes any sharing, modification and redistributing of the work.
You demand to have the choice to take away choices from people. I choose to have the choice to take away the choice of taking away choices from others. That is my choice, and you are not allowed to restricting me from having it.
If you don't take away the choice, I won't either. My usage of GPL is only needed for as long others want to make proprietary software and remove choices from people.