sure, it is a different approach than the old model - but i think it's only a guess when you visit a place for the first time. personally, i tip high on my first visit to a new place, any tips i give on my followup visits are based on my previous experiences with that restauraunt. workers remember good tippers, and when they go the extra mile on my followup visits, i keep tipping well.
followup - got downvoted hard on this, so i reflected a bit on my opinion here. i think its cognitive dissonance on my part, and its definitely a flaw in the new tipping model.
