I'll assume this is standard issue Internet hyperbole.
Of all the places to act like a jackass, I'd rate airports pretty much the bottom of my list.
When you fly, any ideas you may have about "personal privacy" pretty much don't hold water. Security staff have an absolute right to look at anything in your possession. Up to and including the contents of disk drives and flash cards. They also have the right to impound items for further examination. And since they are backed by the full technical resources of the US intelligence community, passwords and most encryption schemes are unlikely to keep them out for very long.
Short answer: Don't be a dick at airport security. Ever. And if the nice TSA agent wants to look at your iPad, smile when you are cooperating with them.
I fly 90-100 times per year, and I agree that they believe they have those rights. In reality they do not actually have those rights. Despite the claims made by the TSA and DHS, we do not give up all of our constitutional rights when we decide to board an aircraft. They are pushing the limits now and will eventually get smacked down by either the congress or the courts (probably both).
My statement is only true for US citizens traveling within the United States. Other countries may have little or no concept of personal liberty.
I do agree that making your way through the checkpoint is not the time to make a stand.