They are losing their biggest customers to custom in-house silicon, and smaller orders are going to compete with a market being flooded by superfluous hardware from companies which either went bust due the the AI bubble shrinking, or went bust because they weren't able to compete with the big fish.
I don't think they even wanted to be in the crypto mining market. They artificially hobbled their GPUs specifically so that they wouldn't perform well there.
The AI market will be drastically larger in 10-15 years, not smaller. The bubble aspects of the present will be trivial compared to the long-term result, as with the dotcom bubble. Google all by itself is worth more today than all the combined dotcoms in existence in 1999.
They are losing their biggest customers to custom in-house silicon, and smaller orders are going to compete with a market being flooded by superfluous hardware from companies which either went bust due the the AI bubble shrinking, or went bust because they weren't able to compete with the big fish.