I mean, it’s doesn’t make the memory shortage entirely vanish, but if you’re a CPU manufacturer and the question is “what can you do in the next two years in terms of your CPU products to adapt to this”, selling a relatively-high-performance CPU that can (a) use older-spec memory, of which there is an existing supply in PCs that can be reused and (b) has a lot of on-CPU-die cache to help mitigate the performance limitations of that memory, that’s probably about the most you can reasonably do.

EDIT: I can imagine other things that a CPU vendor could also do, like maybe supporting “tiers” of on-motherboard memory for future motherboard specs for your CPU, where OSes could be aware of high-speed memory and low-speed memory and access both, but stuff like that isn’t going to be done inside in the two-year (well, now maybe year-and-a-half remaining) timeframe where we expect the RAM shortage to be really significant.