Besides, we're apparently here talking about GPUs that can't do graphics.
Personally, if we could use a new acronym all together I would prefer to just call them PPUs: Parallel Processing Units. That way we won't ever have to rename them ever again as the sands of time shift onwards.
A search for the use of 'Generative Processing Unit' can reveal that the expression may be far from widespread. Nonetheless, GPUs today are importantly that. Explicit adoption of that expression matters little in this context - it is not the point. In fact, I initially misread the text in the post as "General Processing Unit", and it still made sense.