Ubuntu Certified Hardware has passed our extensive testing and review process, ensuring that Ubuntu runs optimally out of the box, ready for your organisation. Canonical provides continuous support throughout the lifecycle of the Ubuntu release to ensure quality, functionality, and maintenance for up to 10 years
Where are Purism, System76, Tuxedo Computers, Starlabs, SlimbookES, and others? Instead there's Dell, HP, ASUS, and Fujitsu…
When I bought a system76, I didn't think for a second to check whether it was on Canonical's list. I didn't even know there was a certification.
So I believe the poster meant, a buyer can be sure they are getting hardware with linux support regardless of a list kept by ubuntu. But if you are buying from a brand that has no pledge to be linux friendly, a list of what works out of what's available helps.
When I bought a system76, I didn't think for a second to check whether it was on Canonical's list. I didn't even know there was a certification.
So I believe the poster meant, a buyer can be sure they are getting hardware with linux support regardless of a list kept by ubuntu. But if you are buying from a brand that has no pledge to be linux friendly, a list of what works out of what's available helps.