It's not the youtuber's faults.
So me and my friends decided to test and see just how many ads youtube is gonna shove down our throats even when the youtube video doesn't have ads, I made a random 10 minute video of just some nonsense i recorded of my screen and uploaded it on youtube.
When my friend watched it he got 8 ads on the video, 2 at the start as usual and at the end of the video, 5 minutes into the video we got 2 ads which we then paused and talked about how dumb this is since i can't even monetize my videos, after starting the video again it played yet another 2 ads, turns out if you pause the video and wait for too long and start it again it plays another ad, so a 10 minute video from a channel that can't even monetize it's videos gave away 8 ads.