Earlier quoted context omitted.
If you're neither paying YouTube any money nor watching their ads, meaning you're a pure money sink, why should they care about your goodwill?
Because you're an active user and thus help make the site "popular". We're seeing on Twitter what happens when management starts ignoring this basic logic of the internet.
On YT, the people providing the value are the content creators. That is the same content creators who get a revenue share from ads and premium. They're the ones who benefit the most from blocking ad blockers. The people watching videos with ad blockers (and sponsor block)? They're not providing anything in exchange, to the platform or the creators.