To wharvey, I know the easier approach would just be to carry an ID, submit, and get it over with. However, some people truly will be inconvenienced in this (such as those who are almost late for their flight, in a rush, going through a hard time, Deaf/mute/blind/other disabled passengers). And, it's also the principle - the old way worked just fine, and this new policy does absolutely nothing for true security and safety. It's a waste of time, money, and resources, and above all, intrusive - especially for domestic travel. Just give people who don't have their ID a SSSS and move on.
That's why I think it's important we DO SOMETHING now before TSA decides to take a step further (doing this for every traveller instead of those who just forgot their ID, or having ID scanners connected to a database). They're already going too far, and they're ignoring many valid cries from a big number of people. Just look at all the comments - in the past, people would argue about a policy, but this certain policy seems to bring out an unanimous outcry.