Does exactly what declared in it's name.

doing the work youtube doesn't

Va de lujo / Works like a charm

It works fine, even if I prefer to use the equivalent script for Tampermonkey now. It's just a preference, because both solutions give the same results. For those who also use the script "Local Youtube Downloader", the dislike number won't show in both cases (add-on and script). So I guess there's an issue from the downloader script that prevents the dislike number to be displayed. When I switch it off, the number is displayed again.

Great extension, but it doesn't work with some violentmonkey scripts (local youtube downloader and savefrom.net helper)

Bardzo użyteczne narzędzie dla YouTube'a. Miło znów wiedzieć, czy warto coś oglądać.