yes.Yes, and to be clear I do not think this case of "PS5 running ML inference" serves as any proof whatsoever on whether or not the PS5's ALUs can run dot4 INT8 / dot8 INT4 operations.
For all I know, this NN could be so light that it's running on a small percentage of one CPU core, and running it on the GPU could just bring unnecessary dev time with little to no performance benefit.
I can see the CPU being freed to do this type of work especially if you're doing animation on the CPU side of things.