That is true, except YouTube doesn't always show you all your subscription content. In fact it frequently hides subscribed content from me, including live streams, even when I set the bell-icon to "All". The difference between the subscriptions tab on YouTube and NewPipe is that the latter literally scans every subscribed channel for uploaded content, so I have yet to find out that I've ever missed something through it. Whereas on YouTube I often discover that I missed out on either a live stream or an upload that did actually interest me but it never appeared in either my notifications or in the Subscriptions tab. The subscriptions tab is better than anything that's on the home page, but I prefer to not have an algorithm lie to me that I can see "All" new uploads.
EDIT: Also, random semi-related complaint; YouTube on web never honors when I click "Set Reminder". It doesn't matter if I permanently allow notifications in my browser or what. I get no emails either. I have a hard time believing the YT devs have written any tests for it. Then again, I've never tried it in Chrome. ¬‿¬
