Answer 1

Is this not another instance of your own thread?

https://www.sololearn.com/Discuss/951000/?ref=app

Answer 2

Maybe they are dealing with unexpected problems that they did not have with the iOS version

Answer 3

Because Android is for real men that don't need to sleep at night. :)

Only joking. I'd say Turtle is probably correct in what he said. I doubt they've forgotten, but simply are working on it and decided to release it to the others that were already ready for it. Or maybe they're going to make us pay for YouTube Black subscription in order to get that feature. ;) (In all fairness, I love my YouTube Red sub, but I'm just joking about it because that's what they did with Red)