I'll offer another theory: they could be stocking up the mid-range chips for FirePro cards with a lot of VRAM in order to "promote" AMD with the AI crowd. Seeing how their latest drivers specifically called out AI workloads improvements in SDiff and such, I'd imagine it's not a far fetched theory. This also includes the big strides with ROCm.
They would still sell those for more money and, probably, sell everything to the Prosumer and Professional markets before their CDNA cards are ready for workstations (IIRC).
Do I like this? Generally speaking, not really. I still have my Vega64 plowing through games just fine and the 6900XT for VR, so I'm not really bothered by current and, possibly, next gen, but I do mind "the trends" I guess.
Anyway, we'll see how this one pans out rather soon!
Regards.