Because I don't understand the point of starting the YouTube player before the page is fully loaded. I think it's banditry.
I don't like when the player starts itself or the playlist runs automatically, I like to have control.
The extension works, but with a second delay, but that's a good thing. From me 4 stars and thanks with encouragement to be more effective.
If the problem may be on my end, e.g. some other extensions, please advise.