I wish Twitch had an Apple TV app.
I've found that the Apple TV is the only way I "get" YouTube in the same way the kids these days do. No way am I watching videos on my laptop/desktop/iPhone/iPad while multitasking, but video on the big TV is great when sitting on the couch or on in the background.
Twitch on the Apple TV would be similar, but it appears Amazon (as with Prime Video) is refusing to release an app.