Well, considering that the US considers some political beliefs and journalism crimes, "don't go there with incriminating devices" implies restrictions on free speech and journalistic freedom. Also, privacy is not only for hiding crimes. Equating privacy with criminality is a great way to get undermine people's rights further. It's perfectly ok to think that some random TSA agent shouldn't be seeing my family photos etc. when I have done nothing wrong.

If you believe these rights are not important, that's your own opinion. But I think it's perfectly valid to criticize attacks on human rights.