You keep saying they are deceiving guests. Disney added FP to a lot of attractions to up the capacity of the system, yes, but it also allows choice, which is a GOOD THING for the consumer.
I completely agree that choice is a good thing for the consumer. But the choice in this case is a side-effect born out out of the necessity to "up the capacity" of the system. The same system that does not have the true attraction capacity to fill the demand. Its propped up by adding FP+ to shows/attractions that dont need it. While this does not affect having a nice vacation, the deception is allowed by us (the guests) not letting them (TDO, TWDC) know that we see their trick and they are not fooling us. If they feel they "got away with it" because nobody spoke up, then perhaps they will feel that they do not need to build more attractions in a park like HS or EPCOT, whose to stop them from trying to "trick" us again in a different manor, one that may actually impact our vacation in a negative way?
Let me say again, you have a valid point that in this case it doesnt really do any harm. Your example of HS is great, a family can choose to FP+ a show like Indy or Disny Jr if their not riding ToT or RnR. My only point is that I would agree with
@RSoxNo1 that it is deception, even though its not hurting anyone, its covering up the ugly fact that there is an attraction capacity issue and the less negative feedback they get, the less they will be inclined to build more quality attractions. And while some people will say its not all about attractions, I agree, but in the case of the FP+ system, lets face it, the big rides (TT, TSMM, Soarin') always run out of FP's everyday, compared to something like CoP, which shows that there is a VERY BIG demand for those type of quality attractions. Im just saying that we need to let them know they are not fooling us, they need to know that we, the guests, are allowing this to happen, but we expect something to eventually be done about it. Thats all.