I don't disagree. I've never liked FP, always thought it overhyped and underdelivered. And the whole system is why the MK absolutely is no longer a theme park, but a bunch of Disney-BRANDED experiences. No one experiences Frontierland. They ride one of the mountains and then head to Fantasyland for their FP for 7DMT or PPF.
FP fundamentally altered the way Guests experience the park (all of them really, but the worst affect is at MK by far). You aren't immersed in anything but the Disney BRAND at the MK. I recall you saying somewhere that you are in your 20s. Considering FP debuted in 1999, that means for most of your life/visits to WDW, you only know of things that one way.
So I have to partially disagree with you on this one. True, there are some people that will do exactly as you have stated, just go there and look for the next FP+ window, and not even realize what a wonderful place the park really is. They will not look for the details, couldn't care less about the stories behind all of the attractions and areas, and run around like mice in a maze. They will keep their heads buried in their phones, and they will take lots of selfies. I don't like it anymore than you do, but it is a sign of our times, good or bad, and I simply do not see it changing anytime soon if ever. They are used to having everything at their fingertips at a moments notice, and Disney is embracing this demographic.
Then there are people like my wife an I. I think you know that I have been going there since 1978, and was 20 years old the first time I stepped into the MK. I lived in Orlando then and for years afterward, so visited both MK and EPCOT a whole lot. We are interested in the back stories, we look for the little details, we do NOT run around like chickens with our heads cut off to get to the next attraction. We stroll. We take in the little details. We spend time in every land in the MK, and even though I have been there literally hundreds of times, I still see something that I had not noticed before. Yes, it can still be done, even after that many visits. Oh, and we did NOT use FP when it was available. It simply never worked for us. If we wanted to ride the top rides, we got there at rope drop, rode them, and moved on. Guess what? We STILL do that today with FP+, but now we can schedule different rides to fit in with our time schedule. We can still get to rope drop to ride whatever we like, and then we have our FP+ for later in the day, sometimes at a different park even! We have never said that we need to get in so many attractions on any particular day. Some days we ride a whole bunch, some days we only do a few.
I am in IT, and have been for almost 40 years, and I love technology. No, I don't own an Apple Watch (someday - yes), do have a smartphone, but I believe I pulled it out and looked at it maybe 2 or 3 times a day, just to check the time for a lunch or dinner reservation. I was never walking while doing this. We always step out of the way when we do something like this, so as not to be in anyone's way. Maybe we are in the minority there, but you can't fix stupid.
I think Disney needs to keep up with the times, and if ordering a meal on-line with an app is good for some people, then more power to them. We may do it, we may not. You made the statement that what happens when every table is full of people that are waiting for their food that they pre-ordered, and nothing is available for those waiting in line? Well, the simple solution is to eat at a different time. If it is that full, then you should have either eaten earlier, or eat later. That happens now with the current system of everybody standing in line, so there is no difference there. We never eat at a QS when it is crazy busy. We eat at the down times, and yes, there are those.
I know that you don't seem to like change, and do not care for technology. I have no problem with that at all. Unfortunately or not, it is the way of the future, and you can like it or not, but it is here to stay, and will no doubt grow in the future. Since my wife and I still enjoy the parks as we have for decades, you don't NEED technology to enjoy them, but it can enhance certain experiences.