Counterpoint: it works, you just have to wait a bit, since now the server will not actually send you the video until the mandatory (pre-skip) ad’s length has elapsed.
Which is fully in their right, I’m not complaining, it’s not like I’m any worse off (waiting on a black screen vs waiting while some bullshit ad tells me to CoNsUmE PrOduCt!!!)
It's helping teach my five year old patience and not to flail around hitting the keyboard when something doesn't happen immediately. He only gets to watch videos and playlists I search out for him, and only when I'm in the room... no YouTube Kids here. Once he's able to spell well enough to search, I'll have to re-adjust.
I have found, and this might just be psychological, that if I hit pause, wait a second, then play, the video starts playing within a few seconds.
Have you tried "uBlock Origin Lite"? It is by the same author, Raymond Hill (gorhill). It has been working fine. I use "optimal" level for the filtering mode. (Note: I use Chromium on Linux)
"The Firefox version of uBO Lite will cease to exist, I am dropping support because of the added burden of dealing with AMO nonsensical and hostile review process. "
There is no need to use uBOL on Firefox, just use the normal version.
EDIT: But yeah, the Mozilla reviewers are very hostile, also had to fight with them for one of my add-ons. It's ridiculous that spam and malware add-ons get a pass but privacy-conscious add-ons get rejected.
Not everything is a conspiracy theory. Mozilla's reviewers were already infamous in the XUL era. Mozilla's dumbness is not due to Google it's due to them themselves.
One would think properly reviewing one of the most important addons in Firefox would warrant spending sufficient resources, which Mozilla seems to have for less impactful stuff.