This issue is very important. And, it seems there are many users (include me and you) who do not know well GPL in this forum. WordPress also long time discussed this issue. So, in order to develop and community of Q2A in health, there will be a need to discuss this issue thoroughly with members of the community. I want to hear opinions of many users as possible. (Gideon, jatin, puti, maxj, monk, amiya, ProThoughts, and of course other users) in ANOTHER THREAD.
I am not attacking Kai. Rather, I have defended him and this community. Please understand it.