Honestly, I think implying that rebuilding the hash table is an O(1) operation is worse. :P But judging by the downvotes I'm getting on that particular comment,

Honestly, I think implying that rebuilding the hash table is an O(1) operation is worse. :P But judging by the downvotes I'm getting on that particular comment, it seems that most people agree with you that rebuilding is indeed free. So it seems you won this argument on several fronts ;)