"Sure, sometimes things get really out of whack and they need to warn you that they're going to be ten or fifteen minutes late or whatever but most of the time it's not off by much and shouldn't require this much hand holding for adult customers."
Except, sometimes they do. I remember once I was riding the TE, sitting at dinner with a dad and his 11-or-so year old daughter. The guy making the announcements in coach (we could hear them in the diner) made YET ANOTHER "don't walk barefoot" announcements and the girl said, "Wow, they really think they have to repeat things a lot of times for people to hear them" and I quietly said "That's because some people don't listen" and her dad laughed. But they DON'T. I've seen it. I've seen people walk to the diner to ask when they were going to start serving the 6:45 meal...when they weren't even running behind and it wasn't 6:45 yet. I guess I'm less surprised by the fact that Amtrak figures it needs to hand-hold because I work in academia, and I've seen all kinds of crazy not-paying-attention or non-direction-following.