Phone companies really have learned from Mitnick. For example, if you call an operator, they absolutely will not tell you what number you called from.
If you're in an old Ameritech area in Ohio, pick up the phone, dial '0' and when the Operator comes on, say:
"OBT-125, please read number on display."
You'll get the NPA-NXX-XXXX read out to you and she'll tell you to have a good day. As of three years ago, you could call any of the embarq/sprint area operators in Ohio/Kentucky and just say, "ID Me."
Phone phreaking is still alive, but, it's not as common as it once was.
If you treat security like a mathematical problem [1] with no grey areas, you are going to reject almost every security measure and say "that would only give users a false sense of security."
Just about all security measures can be worked around by a determined attacker. That doesn't mean you stop using them.
The linked page says to hide your whois information. This is surely security through obscurity. Yet it can vastly reduce the number of reset emails you get.
[1] You should treat crypto like a mathematical problem.