Huh, I think I figured it out. It now works again after removing the extension "Return YouTube Dislikes" which I had just kept around because why not. Turns ou

Huh, I think I figured it out. It now works again after removing the extension "Return YouTube Dislikes" which I had just kept around because why not. Turns out if both this and uBlock are active, YouTube will refuse to work. But only uBlock works just fine.