Political Corectness is pointless and yes, it doesn't allow free speech. If a persons going to make a point, a persons going to make a point. What I'm trying to say is, you have to be blunt and to the point. If you can't, if you are being criticized by not being "PC", than no, there is no free speech.
Your mixing up free speech and consequence free speech. If the government comes after you or yiu are actively prosecuted ir have any ither constitutional rights violated because if what you said it is. But if you are feee to say sonething others have the freedom to respond and/or be offended. And by the way there is a difference between being PC and just not being a jerk.
Every thing politicians say and do is obliviously controlled. Its all one sided agreements. Whenever something such as the Michael Brown shooting happens and the press wants answers they try not to answer what isn't written in a note card for them, they avoid alternative press members in fear of giving the wrong but correct information.
The whole point of free speech is to allow minority groups and vulnerable people in society a chance to be heard on an equal footing to the majority population. Political correctness ensures that minority groups aren't silenced through the use of false facts, shoddy science or just out and out prejudices.
Political correctness acts as an equalizer against privilege just as Free Speech is suppose to be and that is no bad thing.
While I highly disagree with this age of political correctness, it still has no effect on freedom of speech, as currently I can say anything I want without being arrested, although this is not every area, as universities have begun to oppress people's right to speak their mind.
But, on the other hand, this PC movement means that saying almost anything that goes against the prevailing group think can lead to you being heavily criticized.