Is that's hard? Like usually I get a new computer and can install Ubuntu in it without any drama.
The last time I did this was very long ago, but still I was surprised that of all things, the WiFi didn't work (some Intel issue). Newer laptops also have "accessories" such as fingerprint reader, touch bar etc which may not be trivial to get to work.
And anyways, the interesting part of the link for me was official collaboration from Dell, although I couldn't fit it within the title.
My take is a Dell can be pretty good but things like the fingerprint readers will often be busted even on Windows. I expect some things to be busted on a Dell and I'm not going be like those mac-ers who go to the genius bar 50x because there is some small thing like a fingerprint reader that 'just doesn't work'.