It seems it block the video itself if there's a skippable add.

Why doesn't this work in Firefox for Android?

been trying to figure out why I couldn't comment on youtube and finally figured out it was because of this addon

Great and helpful

It looked work for a while, but a few weeks later, the addon starts to open a new tab frequently that shows it ads -- hey, adblocker shows ads of itself!!

*Was* good, but it just opened a tab without permission to a 3rd party website asking to write a review. Very bad no-no! They want a review? Fine, I came directly to Firefox Add-ons website to give as LOW of a review as I can instead. Do Not open other websites out of nowhere.

Do not install, redirects/opens tab without permission to 3rd party add on site.

Been using AdBlocker for YouTube for 10 days now.
I'm very happy, it works perfectly, in my case in conjunction with AB+, with no apparent negative interaction.
I should have tried it years ago!