I guess it has to do with the layout of their hardware below it?
Personally I'd have them just ditch the numpad entirely and center everything, the way they do on the Librem 13. USB numpads are cheap and widely available for those who need them, and typing on an off-center keyboard feels weird.
But if you are considering the Dell XPS, I recommend you instead check out their Latitude 7xxx series. (On the website you find them under "For Work" instead of "For Home"). Like the Dell Latitude 7390 or 7490. Yay for real buttons. And pretty good in other areas as well, such as the keyboard quality, and ports.
It doesn't have touchpoint though. I just want a touchpad with real buttons. There aren't many options for that anymore. Another nice and relatively unknown option is the VAIO (no longer from Sony). https://us.vaio.com
I would LOVE to get a Purism if only it had the buttons.