Haha so true, and I say this as a Linux user for like 20 years. There are some Linux users who value functionality over form so much that they prefer cluttered user interfaces with tiny borders to maximize screen space.
The desktop is finally catching up with the more restrictive permissions model where an app doesn't just have the ability to do anything the user can do but instead only has access to what it needs.
Going with a familiar interface style like the ones people already use on mobile just makes sense.
I'm not a fan of all the blank space in their design language, it doesn't look bad or anything but I don't have a touch screen and having to move the mouse around so much for long periods of time physically hurts, especially on laptops.
I wish it was more... desktop friendly...
If they took more advantage of the dynamic layout capabilities of GTK4 to have a better desktop layout based on their already existing design language while still having this mobile esk layout for other devices, we'd be golden.
If they don't want to do that, they should at least increase the default mouse speed so it feels better out of the box.