> It supports up to 100k uploads and you can stream and/or download your uploads on web/iOS/iPadOS etc. https://support.google.com/youtubemusic/answer/9716522?hl=en

TIL they somewhat resurrected Google Music and raised the limit (I think it was 20k on that). I used Google Music for years because it seemed like only Spotify and them figured out reliable caching on mobile, other services when I'd lose signal they'd give up trying to stream... even noticing recently apple music is not super reliable with that.