You don’t need certified Linux hardware to use Linux, and hardware is supported for a really long time once it’s there.
So you don’t have to worry about using latest distros, you should always welcome every update, they fix and add new things (unless it’s Ubuntu, screw them). And if you have new unsupported hardware, it will usually be supported in the next kernel release.
Meaning if you go with usual x86 CPU, Linux won’t have issues with almost anything that comes with it.