Well, yes and no.
Over my half century, I've watched our freedoms erode each year... often in the name of security or political correctness or protection for the government. Better to stop it right away than let it go uncontested.
Neither Apple nor ATT can afford more bad PR these days. Apple particularly no longer carries the underdog tag that once protected it. Now they're more seen as a greedy control freak. I mean really, no discounts for military or police?
Again, I don't think they'll use that clause much either. But it really shouldn't exist as written.
I think it is very important to distinguish government oppression from corporate business decisions. The issue gets confused too often.
An agreement between two parties is just that... an agreement between two parties. The Constitution and the Bill of Rights, particularly those sections dealing with freedoms and protection from tyranny, restrict the powers of CONGRESS, not corporations. Corporate governance is the domain of statutory law, e.g. Uniform Commercial Code, and is internally regulated by a variety of agencies including FASB and SEC.
A dispute between two parties that have entered into an agreement is defined as a tort... not a crime. There's no crime occurring when AT&T decides to tighten its agreement. In fact, when you signed an agreement for service with them you agreed to allow them to modify the terms of that agreement at any time and probably without notice. How? Most corporations reserve that right in the language of such service agreements... and if you receive service from them, you implicitly agree to their terms including the right to change those terms.
If you don't like those terms, nobody is forcing you to be their customer. AT&T does not have a monopoly on cellular service. Even though it is a near monopoly, and even though I agree that it's not good PR for a company to deny people the right to badmouth that company... and while it's not likely that they could win a suit against you for defamation (not because defamation is lawful, but because fair comment is not considered defamation), they aren't required to provide service to people who use that service to criticize, slander or libel them.
I am a big supporter of the Constitution and the freedoms it protects, and I'm also a consumer rights advocate... but I'm also a consumer awareness advocate. Using rights to justify a belief of entitlement to consumer gadgetry is such an egregious perversion of Constitutional law that it cheapens the idea of freedom in the same way that stamping "God" on everything from pledges to currency cheapens the concept of God.
As long as you keep insisting on confusing civil rights with consumer privileges you will continue to bind yourself at the mercy of corporations only to complain about it later on. The trick is not to bind yourself to the mercy of corporations... In this case it means not becoming a slave to your desire for luxury gadgets.
Turn off, tune out, rise above.