By that logic walking and regular bikes would also be 0Wh/km. But Wh isn’t a unit of electricity

It’s a joke. Based on e-guitars / acoustic guitars

Yup. Very odd.

Have you looked into the Framework Laptop? It’s highly customisable, upgradable, and repairable. I don’t actually know how well it plays with Linux but as it is appealing to techy people who like to tinker I would imagine the community to be rather active.