I had YT premium for a while, and then I just wanted to download some videos (you know, like they advertise you can) and they just didnt allow it. Had to either watch it in the YT app or on youtube.com on my PC. That’s not downloading - thats just streaming with less computation for youtube, which helps youtube but not me. What a great ‘premium benefit’!
Cancelled my premium right then and there, if they cant provide a feature as simple as just being able to download videos to mp4 or something, thats just misleading. Literally takes seconds to find a third party site or app (NewPipe) that does it.