Easier said than done when you talk about the global video sharing platform that is used everywhere by everyone...
It's like telling someone to just ditch their smartphone... not practically doable. Blocking ads is morally correct when you are forced to use it.
No one is forced to use youtube in the same sense no one is forced to use a smartphone.
In the real world you'll eventually have to use those things to participate in society, just by the sheer reach those things have in our daily lives.
Just look back into any time a friend or family shared a link, or it was embedded in an article, or a company made an announcement only in youtube, or if you're in school and you were asked to view some lesson, or those college lectures that get uploaded to youtube.
I can get more examples, the thing is you'll need to click a youtube link at some point. Is it ok for us to deal with an enshittified platform? should we act like a luddite because we don't agree with the TOS? is this fair for us?
My current usage of youtube doesn't involve following creators, for that I use odysee/twitch. But the point remains, its morally correct to block ads, the platform is unfairly dominant.