That’s not how it works with the rest of YouTube menus. You click the three dots, choose “not interested” and I never see those things again, including those channels. But for the YouTube Featured section it’s just a disguised ad roll. It doesn’t matter if you interact with it or not because they show it for whoever is paying them the most at that moment. Right now it’s Olympics, a few weeks ago it was Super Bowl, before that it was some games.