In addition to removing ads in YouTube, it also gives ad-free YouTube Music (which fucking sucks because it always plays the video version of the audio). But honestly, the biggest problem is the app itself shoving shorts down your throat and lacking a bunch of features that third-party clients have. And even if you pay to remove ads from YouTube, you can’t pay to remove ads from the videos themselves. You can only do that with sponsorblock, which YouTube could totally just adopt if they wanted but as is, you have to use third part apps anyway.