Why do I feel like YC videos are targeted at really slow people? The combination of discussion in slowmotion and exaggerated gestures reminds me of elementary school. I’m sure there are valuable ideas in there, but I just don’t have the patience to watch.

They are probably following some kind of training.

Those features are very common on every educational video. I do agree that this one focus on an audience that is supposed to be too advanced in relation to the video depth of knowledge, so it shouldn't need it. But still it is normally pushed for every video, and the risks of getting the pacing wrong are very asymmetric.

YC (and Dalton & Michael in particular) like to emphasize clarity and "the basics" in their videos. Recall that their target audience are largely nerds in their early-mid twenties who've never started a business before.

Just watch at 150% speed.

Sorry Mr. Smarty Pants that Hacker News is not Smart enough for you.