

I’d say that most systems on Debian (generally networked servers for businesses/services vastly outnumber desktop installs) are running the server version because it’s so solid and pretty light. The stable release model works well in production environments.
But yeah, the majority of desktop users are using a DE unless they’re WM-only, like me.
Yep, I used to work for a robotics company that makes self-navigating floor cleaning robots. The LIDAR is completely integrated into the housing of the robot in both the old designs and the new one; it’s barely noticeable.