Advertising people are just the worst. I have an old TV/console setup I sometimes use, and sometimes use YouTube on it. the amount of advertising (with no blocker) is horrific, way worse than broadcast or cable television used to be. On music performance videos they will sometimes put ads in the middle of a song.
The whole industry is trash, and as far as I'm concerned Madison Avenue and everyone connected with it are fair game for any military power on earth to take potshots at.
YouTube is horrible with it - start a video, watch an ad - skip forward, watch an ad - skip more forward, watch an ad, skip forward, ad...
I assume they will eventually start live-patching ads into the actual video streams and refuse to serve the rest of the stream unless the player has confirmed the ad has been shown. I can think of plenty ways how to achieve that so I guess the bottom feeders at those ad companies can do the same. If/when that happens it'll be bye-bye Youtube and any other venue which implements such measures.