I'll play devil's advocate just this once. [View all]
Being a professional sound engineer myself, I couldn't believe my ears when I genuinely heard what sounded like a slushy lisp. I just had to go back and listen to the debacle that was TRUSK (MUMP?).
To be honest, I can hear a distinct electronic distortion on virtually every one of trump's "S"s, making it sound like he's saying "sh". musk has a little sibilance too, but it's not as distorted. It also sounds like trump is slightly softer and less present than musk.
I'm probably wrong, but I wonder if someone raised the pitch on trump EVER so slightly, because he sounds a lot more like Joe Pesci than usual.
I saw a picture from the interview where he appears to be speaking on the phone, but unless they are using a mic modeler app, his track would have much less clarity. It definitely doesn't read as well as musk's, which sounds like it was recorded with a studio-quality condenser.
It's almost like someone didn't use a "D'esser" correctly (if at all) on purpose. 
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