I can understand not showing actual footage from Episode 847, but the way they used that classic Mel Blanc WB/DePatie-Freleng scream for the Elmo jumpscare made me laugh when it came up! I think it's because I've heard the scream used in too many humorous moments (including in some of my own videos) for that jumpscare to spook me.
Where did the Big Bird clip they used come from? Is it an episode or segment that has been released commercially, online through Sesame Workshop, or on HBO Max? I really don’t know where that clip comes from (though it’s clearly not a 1970s clip).