I actually agree with Wolfscout on this point.
SSC is a term we use to describe a situation that for safety sake should be adhered to, and then we further quantify it to say anything outside of SSC is not acceptable.
Personally I prescribe to the term RACK
http://www.bdsmlibrary.com/forums/sh...highlight=RACK
As far as what is considered politically correct or incorrect, we as people very often times try to say things without offending others. This includes our inner circles within BDSM.
When people talk about different activities and different fetishes, if it falls outside of what is generally accepted as a kink we tend to be non-committal in our distaste .
The Beastiality thread on this site is a good example. There were a couple people that found the idea of that activity quite abhorrent. Though it isn't my kink, I certainly wasn't going to call the activity sick. That activity is certainly politically incorrect. Another example would be scat play. Admittedly there are some inherent health risks with that, and it would fall outside of the generally accepted activities within BDSM, so it would qualify as politically incorrect.
As to the original thread, and what is politically correct or not. To say something very general about the idea of a collar, is in my view a very good way to not offend someone, and under the definition provided above. That falls into the view of politically correct.