My take is that Apple is taking design cues from the iPad when it comes to designing the macbook pro.
For example, the new MBP lacks MagSafe because the envisioned use case is that with the improved battery life of these laptops, you shouldn't need to camp near a power outlet 24/7. In this context, MagSafe is deemed a crutch for the fact that laptops then could only get so much battery life. You should be free to use your laptop anywhere you wish, just like an iPad, and charge your device only at the end of the day (say while you sleep).
Meanwhile, the butterfly keyboards and touchbar seem to draw inspiration from the onscreen virtual keyboard of the iPad. The end goal could be typing on a glass surface that is able to adjust itself on the fly to suit your current workflow. No physical keyboard, no chance of keyboard failure.
And I stress that I am not saying whether what Apple has done here is right or wrong, just ruminating on their rationale for having done the things they did with regards to the MBP redesign.