Exactly this. Why do so many people feel entitled to free stuff at the operator's expense? It boggles the mind.
Personally, I agree with the 'my device, my rules' comment. If YouTube want to (try to) block me, they can go ahead. They're under no obligation to serve me video content even if I didn't block ads, so it makes little difference.
But yes, it is their right to try. Just as it is my right to install & use an adblocker.
Why would any regular person empathize with the criminals in the commission of their crimes?