I'm convinced there must be a prescribed US essay structure that mandates describing what you're going to discuss in the essay - it has been poorly translated into the style for youtube videos.
It took me quite a few years to realize how dry, boring, and repetitive this makes your writing, and I now choose to write as I talk. Might make for worse documentation, but it's far better for conversing with other people either in real time or in back-and-forths via email.
Say it (at length)
Say what you've said (briefly)
Is how you successfully present things in the US