Still, it does highlight how YouTube sabotages the quality of its own platform by accidentally creating pressure to post at super-high frequency. As a YouTube viewer, I'm actually quite annoyed how confusing its user-interface is. Google is so proud of their AIs that they make it extremely difficult to just get a dumb feed of "what's the latest posts from the channels I follow"? The system really wants you to explore their content and random walk until you've got some guy screaming at you about how Soros and Goldman Sachs are trying to take over the presidency.

The subscriptions in youtube is definitely broken for me. I use RSS feed for some of the channels as I was annoyed at how the notification count would not match what I had watched or not. That was a pain even with only a handful of channels.

On the left there is a menu the fourth item of which is Subscriptions. Click on that, it gives you exactly what you asked for.

That only works for the first video, after that it doesn't play the next video in your subscription list, it plays the next algorithm-recommended video.

There's currently no way to "catch me up to everything I've subscribed to" without micromanaging after each video.

Except in this case the content creator is not the product. YouTube's business is to sell ads to YouTube viewers not YouTube creators.

Youtubers are product to viewers, viewers are product to advertisers