All that is left is letting people without a watch history default to seeing their subscriptions instead of a blank page. That's the whole point of subscribing: I want my own curated experience. I don't want to watch BS YouTube thinks I want to watch.
It was a mistake letting YouTube decide on behalf of everyone that recommendations was a better experience than letting the users decide for themselves what to watch. The recommendations are no less of an echo chamber. Worse, the recommendations are gamed with churned, garbage content. It's the same problem as google search.
We need a return to form of user-curated content. Down with algorithmic recommendations.