This is a very polarizing subject. You're either totally against it, or you see no issue to worry about. Guess which camp I'm in?
In all the comments I've seen though, I've yet to see anyone explain why having Disney "track" you at WDW is a bad/dangerous thing, or what it is we have to worry about?
Would somebody mind telling me why this is a bad thing? What is it you are worried about Disney doing with your touring information? Sure, I get that they will know what I ride, buy, eat, but haven't they already know most of this? It probably wasn't as detailed as what it will be with the MagicBand, but they could still build analytical data which they could use to influence how I toured the parks.
I know the information they collect will likely be used to try and further influence me while at WDW to spend more money, but I'm not afraid that it will be in such a way that I'm worried. By that I mean, this is something they and every retailer, TV show, commercial, movie theater has been doing for years in a mostly subtle way, and this is just the natural evolution of that. I don't expect there to be a hard push or even (overtly) subliminal messages to make me buy stuff any more than they've done in the past, because I know that if they try and do this in a way that would cross the line, there would be a huge outcry. So, what is it I'm missing in the paranoia?