I like straight talk. Sometimes it may get harsh and rough. But in general you should not forget to keep a civilized behaviour. I understood transition's post not as an announcement of a politics change, but just a reminder about the terms of use.
Say what you wnat to say, but try to keep it civilized. Often discussions get hot and then one word gives the other - that should still be allowed, that is discussion culture.
And for the straight talk. I guess there are ppl who think the world becomes wonderfull lala-land when all ppl talk politically correct. But I guess the world becomes dumb and stupid then. The real world isn't a lala-land and that is good IMHO. Also I guess "political correctness" is differently popular is different countries. Personally I am not a fan of this, but rather prefer the "if you can't stand the heat get out of the kitchen" approach.
A discussion should contain facts, view points and a good share of emotion, but of course you should avoid to directly insult other ppl. Moderation should take care that it doesn't get too personal and/or OT (look for example at the bunny, while I kind of like it I guess it's probably a bit too much for most ppl and definitely not always constructive (though there *are* good discussions)).
Keep it as it recently was and most ppl should be fine with that.