The reason AMD is crashing is very simple

On AI market, it has zero product to compete against NVDA. 

On general market, while it gains market share over Intel, the traditional semi industry still needs time to recover (we have explained why this is the case many times), so, AMD's near term upside is limited in this space

In China, China retaliation is going to hurt AMD more. US already sanctioned China on advanced AI chips, so impact on NVDA is low