While this is probably generally true, the 2018 6th gen X1 Carbon (I have one and run Fedora on it) has had significant problems with Linux trackpoint support, which still aren't fully resolved. I had to run a firmware update from Lenovo to get things more or less working.
Even though Lenovo provides some firmware via fwupd, this particular trackpoint firmware was only available via a Windows utility, which sucked since I wiped Windows off the machine as soon as I got it. (I had to make a Windows live USB for the sole purpose of installing this update.)
The trackpoint still occasionally dies after waking up from sleep (but much less often since I installed the firmware update.) When this happens I have to run a shell script I set up to bring the trackpoint back.
So, I can't say the Linux experience with my laptop has been great. I'm guessing the device support for these new laptops with Linux preinstalled will be much better.
Stable's entire selling-point is to be the Linux of yesterday, tomorrow. You probably would have had better luck with a distribution that didn't intentionally aim to be ancient.
A year-old laptop is just getting into the sweet spot for Linux in general and Fedora in particular. The new kernels that keep on coming into the release will help with hardware compatibility.
Debian Stable is definitely not so hot on a year-old laptop, though a newer kernel from Backports can really help.
I have a 3-year-old HP laptop and have been running Debian Stable on it for about 6 months now. It's been a fairly seamless experience, as these things go.
For newer laptops, I definitely recommend Fedora. It's the easiest way to get new kernels -- which are what you need for new hardware -- on the regular.
