Didn't make it that far. Time is too precious to waste on someone that is purposely wasting it.
Sure. Which is why my default youtube playback speed is 1.5X.
Firefox, YT only: https://www.mrfdev.com/enhancer-for-youtube The improved playback speed ranges from 25% to 400% (also 800% but without audio) in adjustable increments.
For offline videos, VLC also is capable of changing playback speed.
Edit: I see some podcasts app have something similar (albeit opposite). It shortens dead space between two people talking and try to not affect the speed of their speech.
I find that most videos are understandable up to 3x. I watch most of them at 2.5-2.8x, down to 2x for people that talk fast or with a hard accent. Same for podcasts.