Probably the usual April Fools but he says the exclusive is on his OnlyFans. Feels a bit beyond April Fools if you trick people into paying to sub for content that probably doesn't exist.
Curious, they play fine on my PC and TV and I've just downloaded my own link above (to test if it was anon) and the sound was still there.
In a minute I'll post something with a different audio codec - let me know.