I stopped using the YouTube site long ago. I only subscribe via Feedly/RSS and watch the videos I want directly with 99% no ads even without an adblocker via the embeded video player.
In fact there are individual channel feeds (https://www.youtube.com/feeds/videos.xml?channel_id=<>) and this is a wrapper around that. That's great!
I currently receive email notifications for subscriptions, but I've noticed I don't always get emails for all the uploads of some of those channels. A direct RSS feed should solve that problem too.