How to make a hoarse/raspy voice more intelligible?

Specifically, I’m having trouble understanding what RFK Jr is saying and I would like to use audio processing to improve the audibility of his speech. He has, I guess, a hoarse or raspy voice (due to a speech defect).

A sample recording:

I asked ChatGPT and it recommended analyzing his voice and trying out various filters and effects. Do you think it is achievable at all using just audio processing?

ChatGPT is biased: Wetware 1.0 is still superior to AI when it comes to interpreting speech.
BTW did ChatGPT mention that RFK jr was once keen on injections.