Hopefully, the "stop showing me this ad" feature gets fixed. I'm tired of always being presented with an ad for the "Dixie Store". No, I don't want to shop for Confederate flags and other garbage.
Oooof. You may be able to disable that in googles ad choices setting. Assuming you have a google account.
To get there, when you see a youtube add, there should be some text in the bottom right, "Ad 1 of 2" and then an information icon, click that. and scroll down the popup and you should see "ad settings"
If you don't have an account then I'd really recommend an ad blocker in this circumstance.
Youtube ads in general are so bad. 25% of them are literal jumping off points for scams and there is no way to report them (there is kind of a way but its convoluted and stupid).
I kept getting promoted posts for crypto bullshit stuff, even though I consistently disliked them. I'm not sure there was a proper implementation of that feature in Twitter at all...