Well, the Connection Machine was highly parallel.
Also the declarative way of programming in languages like Lisp, and also the macros, would surely allow for nice expressive DSLs.
So far I am only aware of companies exploring Haskell and F# support for GPUs, but I guess it is usually a matter of someone trying it out.
After all, there is FPGA tooling generation support for Clojure already,e.g. Piplin.
Or perhaps my point is, wouldn't it be harder to get old-style (symbolic) AI to run in a GPU than ML-style AI? (If I understand correctly, the old style is a lot of walking data structures, and the new style is largely matrix operations. The latter seems like a much better fit for a GPU than the former.)