Admirable sentiment, but watching ads does not support Youtubers. It supports Youtube - which you hope translates into Youtube giving money to the Youtuber's whose videos you watched.

As far as I know, most people who make money from Youtube videos do not have a contract with Youtube. There are plenty of stories of Youtube changes that strongly impact the monetization - most recently: [1].

I believe it's better to support content creators themselves (e.g., directly, or via a Patreon or something similar) than indirectly-no-strings-attached-I-hope-having-my-privacy-violated-gets-you-some-something.

Furthermore: the way advertisements work has become so nefarious, that basically your browser is sleeping around with 30-50 random unknown third parties on just about every site you visit. And browser STDs are rampant across the web. Browse safely, use a browser condom, i.e., an ad blocker.

[1] https://www.theverge.com/2019/9/5/20849752/youtube-creators-...