This appears to be 100% bullshit, currently.

I've searched high and low.

https://i.maga.host/acZsKNQ.png

Google doesn't delete from their index that fast.

Also, I have a hit on f5bot for the hee haw keyword. We'll see.

Next.. even if an audio clip does exist, audio manipulation/manifestation is much more easy to do than video. You don't have to worry about moving lips, facial expressions, lighting, linking clips... This was 4 years ago.. quite a long time in development and additional research in this area.