Also, not to be a downer, but CWS and YouTube are both Google property. If your extension does well then they can coordinate to make your life hard. I experienced this personally (https://thenextweb.com/news/how-youtube-killed-an-extension-...) where there was an implication my developer key would be revoked if I didn't delist.
There's 3 hypotheses I have for why this is.
1. YouTube has been gradually rolling out the counter-blocking to an expanding number of randomly selected users.
2. YouTube doesn't bother blocking me because I've purchased a substantial amount of content from them. There's little benefit in discouraging me from buying more content in the future.
3. YouTube has done some analytics to figure out that I'm the kind of person who will never return if no ad blocking is allowed and doesn't trust them to keep ads out of Premium.
I don't suppose you've purchased shows or movies through YouTube?
I feel that YouTube is very deeply entrenched in a streaming architecture which makes it challenging to serve ads that are indistinguishable from primary content. All of the pushback against adblocking extensions feels like an unwinnable arms race until Manifest v3 becomes mandatory.
Contrast this with Twitch - where uBlock doesn't impact ads at all. I feel Twitch engineered their service to defeat adblock from day 1. YouTube wants to be in the same position, but doesn't seem willing or able to mirror Twitch's architecture.
So is Chrome!
I have to wonder when Google will will start using the browser itself as leverage (beyond the upcoming Manifest V3 changes).