It's not okay to tell someone what they can or cannot do with the 1's and 0's on their machines. DRM sucks and so do companies that would seek to restrict rights on how you can use your computer.
"The Register additionally observed that granting an exemption for such a sweeping class would be without precedent in the history of Section 1201 rulemakings."
One of the specific issues with relation to these classes is that they be narrowly defined so that it can be fully understood; I was at the hearing in LA when one of the people on the panel seemed almost angry, asking whether the "tablet" class applied to "e-readers", such as a Kindle he personally owned (and seemed to feel would benefit from not having such an exemption).
Of course, I could see hardware going the way of e-books: You don't own your phone/tablet/laptop, you merely license it from the Corporation who reserves the rights to control what you install or not and to erase it/take it back at any time.
But I reject system-wide DRM for the same reasons you describe. More and more people interact online primarily through mobile devices so these rights are more important than ever.
Making money selling digital goods is all about making paying easier than stealing.
I'm just curious, but have you ever observed anyone give up and buy something because they failed to pirate it?
I've done it myself many, many times.