Most of the UI features that YT added over the last few years can be thought of as a way to skip sponsor ads. e.g., thumbnail previews on the seek bar, the litt

Most of the UI features that YT added over the last few years can be thought of as a way to skip sponsor ads. e.g., thumbnail previews on the seek bar, the little histogram on the seek bar, auto-chapter detection, and playing at 2x when you click and hold on the video.