Look at that screen, indeed: it has a 3:2 aspect ratio, which is practically unheard of in recent Windows laptops. It's good to see someone going for something taller than 16:9 (or even 16:10).
the photo of the lady on the laptop screen on the other end of the webcam is a lie. webcams dont work that low. you see a hand and up someones nose. these cams tick a marketing box and thats it.
It is not on the F6 key but it is between F6 and F7 (a new key added with camera symbol on it) as far as I can see in the picture with focus on keyboard.
Where the XPS 13 wins (if I were to buy a new laptop) is Linux compatible hardware. The Huawei looks nice, but I'd need to hear how well it had worked for people.
In practice though I just bought a second hand thinkpad. Mediocre screen but otherwise excellent value and great Linux compatibility.
I tried one before buying my Spectre and it was pretty nice (keyboard a little squishy), but the real problem is that they're backordered out pretty close to a month at minimum.
If you can deal with that, it might be worth a look.