Getting Gary Johnson in the debates is very time sensitive. The first debates start in October. That's about 6 weeks away. Johnson has to receive 15% average in a few polls to get the invite. Spreading the word is extremely important in that regard. The more people telling others about Johnson the better. Some people have realized this fact and come around.
Liberty can't always wait.
Besides, Johnson was out of the GOP race months ago. Ron Paul's only immediate competition is Mitt Romney.
Meanwhile, it would be nice if everyone would try to insure that at least Liberty has a voice in the debates. What's so vile and underhanded about that?