I understand this POV, too.
Thinking of it, I would say that Kudos/upvotes may make sense when attached to a post, as you say it, and not to a forumer. This implies that there should not a cumulated counter per forumer, in order to prevent this from turning into some trolling-prone beauty contest.
The risk is low with our present delightful community, but 'beauty contests' or 'popularity contests' are a sure way to spoil the mood - one or two dumb heads are enough for this. It was very wise from Eich to devise funny names for the post quantity based titles, rather than titles suggesting some kind of hierarchy.