How does saying "If you use my code, you have to give me your code" make me want to use it, let alone join your "community"? It seems toxic and coercive to me. It's suggesting that my code is of much lower value than your code, so don't worry about it. This might be correct most of the time, but when it's not, it's a problem.
Good communities are founded on mutual respect and voluntary engagement.
OK, and on reading "toxic and coercive" I just point you back to the point before where I said that the opinion has more to do with our emotional reaction to the license and not any true practical concern. Let's just say that it doesn't seem that way at all to me (I'd tend to use words like "fair" and "sharing", which don't seem so bad) and agree to drop this.
Good communities are founded on mutual respect and voluntary engagement.