Listen to the audio between 4:00 and 4:15 - maybe in a quiet room with headphones. That's either TTS, or a Lex Fridman impersonator with some fucked up vocal cords. You tell me what's more likely.
There's also the mispronunciations for common words - words that you can easily verify Lex Fridman has no difficulty with.
There's also the mispronunciations for common words - words that you can easily verify Lex Fridman has no difficulty with.