I think the difference is they're trying to get people who would spend more if they were not in line to be in line less. You, who knew how to optimally utilize FP-, were not that "high-margin" customer. You actually cost Disney a lot in the # of times you rode the ride (each riding of any ride has a known fixed cost) and you do so frequently. Meanwhile more casual travelers who would spend more time at the pool or gift shop buying drinks or nick nacks are standing in line waiting while some low-profit commandos ride over and over. So Disney studied this and figured that getting those ppl on 3 rides (even 1 Tier-1 and 2 Tier-2's) would satiate most of their need to ride rides, make them happy, and get them off doing other things that involve spending more money. Disney is not making this decision willy nilly. I assure you the research is there. It is already proving to raise sales and profit.
Many of these "low profit commandos" are the ones who are saying they don't like where this is headed. Do you seriously think that they will make themselves feel better about this system by buying cheap(quality not cost to them) souvenirs?