I acknowledge that I am more confused by the current negative karma of my grandparent than the karma of any other comment I have ever made on this site.

My observation is that most of the posts I have made that criticised PUA or PUA-associated beliefs have been voted down very quickly, but then they have bounced back up over the next day or so such that the overall karma delta is highly positive. One hypothesis that explains it is that there are a certain number of people reviewing this thread at short intervals who are downvoting posts critical of PUA, but that they are not the plurality of posters reviewing this thread.

ETA: Update on this. Posts critical of PUA ideology that are concealed from the main thread either by being voted to -3 or below, or by being a descendant of such, get voted into the ground, and as far as I can see this effect is largely insensitive to the intellectual value or lack thereof of the post. I hypothesise that the general LW readership doesn't bother drilling down to see what's going on in those subthreads and hence their opinions are not reflected in the vote count, while PUA-enthusiasts who vote along ideological lines do bother to drill down.

Posts critical of PUA that are well-written, logical, pertinent and visible to the general readership are voted up, overall.