A somewhat expected result of the November 17th export ban
on RTX 4090 GPUs to China has been that AMD's top offerings; recently rumored to soon suffer the same fate, have been selling faster than AMD or its partners can make them. Predicting the worst, some OEMs such as Dell have allegedly already set their own self-imposed restrictions
on the export of both Radeon and Instinct cards to China. Meanwhile insiders in board channels have not yet received any official warning that they can no longer sell RX 7900 XTXs or XTs to DIY markets, however vendors and consumers alike sense an oncoming storm and unable to get RTX 4090s are buying up as many of the high end Radeons as they can.
It's said that AMD's production capacity for this surge in sales has been underwhelming, and supply to Chinese board partners has been barely trickling in. This lack of incoming supply of the Radeon RX 7900 XTX and XT, restriction or not, is creating a shortage of cards in China that is expected to impact the remainder of Q4 2023 and much of Q1 2024. With no immediate restrictions expected for AMD's top cards it's possible that they could react and ramp up exports to cover the demand, however that could be risky if AMD is trying to avoid being targeted.
Personally I don't think AMD will be hit with a ban.