Worthwhile update: NetBSD is about to release the 11th release. I took a moment to see if it can run on Le Potato, it has the same problems as the 10th release had. I’d discovered there were some major changes in the DTB regarding describing the USB ports and that seemingly meant they weren’t being initialized correctly at boot with the NetBSD Kernel. Just got a follow up from a random NetBSD dev type about “USB bindings” and driver code. So it’s a mixture of needing to update NetBSD kernel drivers to work with the latest DTB changes.
It’s worth a note that if you can tolerate not having working USB, you can edit the NetBSD configuration on disk before booting to allow for SSH and remote access with root. In this way you can manipulate and use the system supposing you get your network setup in configuration before boot.
So it is possible to run NetBSD 11 on Le Potato, just very non-user friendly. But I will continue to work on it as this has been a pleasurable endeavor compared to normal day to day work.