They effectively write an ad blocking proxy for Youtube. It is open source and decentralized. Google has no way to stop this and they are desperate.
Anyone can contribute code to the project anonymously from any country they want. This will go about as well as the silly attempts to stop youtube-dl.
Kudos to this guy. Disobedience is a requirement for a change in a broken system.
Also there is always Tor, IPFS, freenet... etc etc. It is super easy to host anything you want on the internet and collaborate around it these days anonymously.
If push comes to shove the team can just fork to a -smilar- project with the critical youtube-connectivity function removed as an academic project, that users just happen to download and apply a small community patch to on the fly. All kinds of games you can play.
Google will lose this battle badly. Code is speech.