I can't say that this is a "bad idea" because it could have been worse. I am relieved that there is no pre-booking or seemingly no advantage to using MaxPass in terms of how many FP you can hold at once, just the advantage of immediately booking another without walking to the attraction. I am also relieved that it appears they are only adding FP to two attractions that arguably needed it, and not to basically every ride like at WDW.
I personally refuse be on technology 24/7 and hate that this will cause other families to be on their phones even more, BUT I can be unselfish and see the advantage for certain families who have a harder time FP running, e.g. a single parent whose kids aren't old enough to be left alone or people with mobility issues. And, many people (not me) expect Disney, like everyone else, to be modern and technology-focused. I am concerned about Disney's infamous tech issues, lack of wifi, and people who don't want to use any data or spend the $$$, but hopefully FP running will continue to be a viable option. I hope that there aren't many people who come for once-in-a-lifetime type visits, spend the $$ for MaxPass, and run into tech issues.
Selfishly, I do hate that FP will obviously go quicker. It will be interesting to see how many people are willing to pay the $$ who weren't willing to walk for FP, and how many will play the FP game with intensity and always have a FP booked. I hate the idea of people staring at their phones all day, but that's the world we've become anyway. I could afford to purchase MaxPass for my family for a couple of our park days, maybe instead of getting hoppers, but I won't because I don't want to be tied to a device and not experiencing every moment, even those moments in line.
I also recognize that I unfairly hold Disney to different standards, in terms of charging for a FP service. I happily stayed at a Universal Studios resort hotel in order to use their Express pass system to the fullest, knowing that many families couldn't afford to stay at the resorts or buy the Express pass. Yet, I hate the idea of Disney charging for any FP access.