It was very clear when the first Soop Kitchen was opened that its purpose was to be a safe haven for those who were finding the more argumentative threads agitating in ways they couldn't cope with. I don't think there's anything wrong with that.
However, I agree that cross thread water-tightness is the ideal, so if someone has angered you on one thread you shouldn't then go and complain about it on another thread, expect in a very general way such as "I'm not coping with argy bargy very well today". That, to me, is as 'pointy' as it should ever get.
We all make mistakes sometimes though.