uBO and other traditional adblockers can do nothing against embedded ads in YT vids, at least not those in the extension stores. YT won’t permit extensions in the official stores to make useless it’s new policy. The solution can only be in independent sources, that is the problem. In the stores you’ll find only descaffeinated adblockers which blocks only traditional ads on websites. Install, Greasymonkey or Violentmonkey, maybe Tampermonkey and keep an eye on the script repositories.