Your point (1) is incorrect, actually the reverse of the truth. Dell specifically deserves credit for sourcing and designing the XPS hardware to natively support Ubuntu. There are no "niggling issues" because hardware components and all elements of the supply chain are required to work with Canonical to ensure that Ubuntu is a full experience.
So sorry but the XPS range is a "Linux-first laptop" in the sense that you mean - Dell deserves credit for that work.
Both Dell and Google basically work to define a spec requirement, then put it out to tender to ODM's to respond. In both cases part of the design requirements will have been certification for the OS. For Google it would be ChromeOS, for the XPS from Dell it was Ubuntu and Windows - Window will work anyway for obvious reasons, but it means additional work for the ODM and Dell to ensure that Ubuntu works.
So sorry but the XPS range is a "Linux-first laptop" in the sense that you mean - Dell deserves credit for that work.
Both Dell and Google basically work to define a spec requirement, then put it out to tender to ODM's to respond. In both cases part of the design requirements will have been certification for the OS. For Google it would be ChromeOS, for the XPS from Dell it was Ubuntu and Windows - Window will work anyway for obvious reasons, but it means additional work for the ODM and Dell to ensure that Ubuntu works.