That's a bit embarrassing for AMD - introduce a new performance improving feature; limit it to new GPUs *and* new CPUs; watch the motherboard manufacturers introduce it for existing competitor CPUs....
Hopefully this will be another kick for AMD to "find a way" to introduce SAM on older AMD...
It'd be ironic if the feature were to be unlocked on Intel motherboards without the user having to own a 5000 series AMD CPU.
Hopefully this will "encourage" AMD to unlock the feature on relevant motherboards, regardless of CPU installed.
I suspect that working from home has caused some to use PCs that were otherwise unused. I lent one of my retired PCs to a colleague of my wife - they had been trying to get a Windows XP PC working again to no avail.
Engaging damage limitation mode regarding the power-draw of over-clocked Skylake-X?
.... or just worried that Threadripper will let AMD further eat into Intel's profits....?