The number shown is an estimate, not the actual number of dislikes. The methodology to get that estimate is a bit questionable due to sample-bias.
Furthermore, the extension stops working every month or two.

Does NOT show the dislikes of Youtube videos.

Completely makes up it's dislike count.

thank you. a disservice to the general public from youtube for removing dislikes

Definition of "do one thing and do it well".

A good program I like to see if videos are crap in advance. As YT updates it can break and dumb people give negative reviews it seems.

5 stars.

Literally does not work lol

The add-on itself is really good, as it does what it says, flawlessy (when it works). If it doesn't work, then YouTube is to blame; their updates break this add-on. Please don't give 1 star ratings for this add-on because of YT's bs. Have some patience, Dmitry will eventually release an updated version. Thank you.

Really useful as long as it works.

EDIT: IT WORKS AGAIN

suddenly stopped working. I really hope they fix it soon. Youtube without dislikes is useless and frankly dangerous. It leaves the door wide open for scams and misinformation.

(I will of course change my rating back to 5 stars as soon as it's working again)