Maybe they do now, but I remember losing a lot more than that for that comment. I recall it was just after I made a comment that received a lot of upvotes, which were more than wiped out by having a critical view of the ultimate morality of LoTR. Then again, my "karma" currently at 1066 after 12 years goes up and down by points at a time, so a few points lost will be felt more than for people who have tens of thousands of points.