As for fluffyponyza's tweets, I think they were very ill-considered. It seems particularly poor taste to say that pre-announcements would be unethical, after having made a pre-announcement. The fact that it was intended as a deceit does not make it more ethical. The logic of that is so bizarrely twisted that it saddens me.
I don't think it is that bizarre. One can engage in satire of unethical conduct without oneself being unethical. For example, by satirizing a charlatan televangelist or MLM promoter.
But as I have said before my personal preference is to ignore the pump-and-dump noise altogether. I even ignore it on this thread.