I personally still own a 2008, 2012, and 2015 15" MBP. I refuse to purchase a 2016-2018 for obvious reasons but of course have typed on them. When you look at their keyboards chronologically, you can see the action (height/ key press travel) slowly getting lower and lower.
In addition to Apple's unsolicited quest for thinness, I have a feeling that Apple is slowly trying to acclimatize us to the idea of having non-traveling keys. Possibly with the next big revision (allegedly 2021) we might see some sort of LCD chicklet with haptic integration. It would be weird, but not unlike typing on our iPad and iPhone screens. As long as there is some way of touch typing without looking down, I'd be fine with it. I can see a few advantages:
* non mechanical keys aren't as vulnerable to dust, dirt, and maybe even liquids
* LCD keys could be changed to custom key layouts, languages, operating systems
* no travel keys could mean a savings of space to add a bigger battery (for example)
In addition to Apple's unsolicited quest for thinness, I have a feeling that Apple is slowly trying to acclimatize us to the idea of having non-traveling keys. Possibly with the next big revision (allegedly 2021) we might see some sort of LCD chicklet with haptic integration. It would be weird, but not unlike typing on our iPad and iPhone screens. As long as there is some way of touch typing without looking down, I'd be fine with it. I can see a few advantages:
* non mechanical keys aren't as vulnerable to dust, dirt, and maybe even liquids
* LCD keys could be changed to custom key layouts, languages, operating systems
* no travel keys could mean a savings of space to add a bigger battery (for example)