I run Debian on all of my Home Assistant boxes, apart from one where I am trying out HassOS. I also have a test Proxmox two node cluster at work with multiple SAN volumes. Proxmox is Debian based. Sadly, it isn't very iSCSI friendly - you can't do snapshots. I'm looking at possible VMware replacement options here.

Am I threatening Debbie and Ian's distro? I personally consider Ian to be a bit of a hero. He created Debian, and the world + dog has used it everywhere.

Everywhere.

Them Raspberry Pi thingies are certified (well bits are) for space. It used to be called Raspbian but the OS on a RPi is still Debian with knobs on.