It works just fine (latest browser, no problems with other extensions). The Only problem i see is that you sometimes have to click 2x to have it load and play. Another problem: In comparison to another browser, it loads the video about 4-5 Seconds, whereas the other Browser feels like it starts after 1-2 Seconds. But overall: it works so Videos don't start on their own. I don't know why YT did that BS and removed it, but that extension is definitely putting it back, despite a little bit of clunkiness.