I’ve seen this recommendation a couple of times. In my opinion, the MotionBox UI just looks terrible. I prefer Piped or Invidious for watching YouTube. You can use these in combination with LibRedirect to automatically redirect all YouTube links to these alternative front-ends. FreeTube is pretty good if you need a desktop app. I love LibreTube on Android, NewPipe is another option. There’s also Yattee with this guide on iOS and SmartTubeNext on Android TV.