I have never once seen apache generate a self signed cert and default to http off for all connections. But sure, you didn't say that. I was simply drawing a parallel argument to what you were saying about PSTNs.
So let me make one more logical fallacy since the article clearly isn't providing enough info to prove either of our arguments.
Appeal to authority: Who should I trust dude? You, random internet poster, or Phil Zimmermann? I'm going with the guy who invented PGP and has a reputation and track record on encryption. Through his actions, he has built lots of trust/cred. You have not. If he has started a company, is delivering this as a product, and marketing that aspect as a feature, he clearly believes that it offers some benefit over a fully unencrypted line.
I'm willing to give that man the benefit of the doubt. You on the other hand could be working for the NSA and trying to derail interest in his product for all I know. Oops, that was two logical fallacies.