Recent update made it not worth the effort to keep enabled.
Extension settings now override youtube ones, instead of adapting them. If you turn the autoplay toggle off, it still keeps autoplaying since the extension's checkbox for autoplay doesn't update.
Having videos be auto-paused in new tabs until you click them behaviour changed, now you have to click the youtube icon in the centre of the video instead of just clicking anywhere on the video. Overrides youtube specified theme with the extension one. If it's not going to respect changes made to settings using the buttons on the youtube page, it should at least hide those buttons.