There is nothing immoral about this at all. They're the ones who chose to send people videos for free, gambling on the notion that people would look at the ads. Nobody is obligated to make their unwarranted assumptions a reality. They are as entitled to our attention as a gambler is entitled to a jackpot.

If someone gives you an ad filled magazine, you can rip out the ad pages and throw them in the trash, leaving only the articles you actually want to read. Same principle applies here. If some random person on the street gives you a propaganda pamphlet, are you obligated to read it just because some businessman paid for it? Of course not.

I don't use Youtube at all, but I keep thinking I'm missing out and should make the effort to find a way to circumvent tracking. I can't see that the morality points to an obligation to absorb adverts. There can be no contract on the basis of what your mind must do.

Edit: let's step through this. If I use a towel placed over the computer to block ads, that's morally the same as using blocking software, I think? If I block the ads by putting my fingers in my ears and staring at the ceiling, also the same thing, morally. If I block them by watching them in a negative frame of mind, saying that I dislike ads and won't do what they suggest, I'm still doing the bad thing, the same as using an ad blocker - if it is a bad thing. My obligation, if it is an obligation, is to be receptive. Otherwise what, it's a sort of mind-fraud?

It is still my right to murder to uphold your lack of morals

It's a decent chunk of change for the sole purpose of avoiding ads on a single platform that barely pays the people actually producing the content. If you're looking to access premium content and YouTube Music, it's a slightly better value proposition (but only slightly, because YTM sucks, especially compared to what GPM used to be). For that ~$120 a year, you could buy a bunch of Steam games to occupy the same amount of time as your YT habit. Or you could buy a sub to services like Nebula which actually pay content creators decently. Or you could buy an external hard drive, install yt-dlp, and embrace Talk Like A Pirate Day, Groundhog Day-style.