I've had a Dell XPS 13 9343 (2017 model, non-Developer edition) running Fedora for years without problems. I suppose you might consider it cheating because I replaced the original Broadcom WiFi card with an Intel WiFi card, as that driver was a bit flaky in the early days (whereas the Intel driver has kernel support).
Other than the pitiful 4 hour battery life, the laptop still runs fine, and mostly does what I need it to do for a permanently-docked daily driver.
Hey there! I no longer use my 9343, but I remember I was not able to run Fedora without breaking the sound support for it (Ubuntu had some kernel option set on startup that put the sound card to some legacy mode, instead of the I2C that Windows used). And I never managed to setup palm rejection, it was a constant pain whenever I had to use the (otherwise excellent) trackpad.
(The external "carbon-like" skin texture just disintegrated on it after a few years, and the hinges got loose, but otherwise it is tip-top, still functional!)
Other than the pitiful 4 hour battery life, the laptop still runs fine, and mostly does what I need it to do for a permanently-docked daily driver.