Aw man, maybe it's because I was aware of that general concensus going in, but I was just cringing the whole time... I almost wanted to skip it, only because of how bad it was making one of my favorite shows look. Just brutal, boring, pointless, and a flashback portion of pure AGONY. Made Jack insufferable and I thought the twist was going to be that the Tai hooker actually had a penis the entire time.
I didn't mind the boar in S1 because I got Lord of the Flies vibes, and it worked as a metaphor for something much greater (also, the hunting/bonding stuff between Kate and Sawyer was great).