Purely anecdotal, but when I'm on YouTube listening to content, there appears to be more annoying commercials on non-mainstream channels than channels that are mainstream channels.
Maybe it's time of day, or where I'm listening. But it's Rumble level ads on some of these guys, and these folks are microscopic in terms of channel subs, I'm talking like 100,000 or less.
Theoretically, watching "normie" content like Hickock45 or some such would have more ads due to more eyeballs, but this isn't the case. It's like Google is trying to get you to not listen because there are adds ALL the time.
If you browse using Brave it blocks ads