Yeah. They just plaster the UI elements all over the video, VHS style, and they remain on screen for several seconds. Browsers are particularly obnoxious: they display a giant icon right in the middle of the video. Depending on screen size and orientation, it can straight up block the entire content for several seconds, or indefinitely if the video is paused.

One of so many reasons why I love mpv so much. Fine control via keyboard, allows turning off all the UI elements. Always a pleasure to use. I hate having to use any other media player.