I would say coming from my cell phone at least, I would describe my usage as far more intentional than it was on my phone. I used to wake up and immediately start scrolling on <application of choice at the time, recently bluesky>. Since I've relegated my phone to the sock drawer, I actually find myself waking up and getting out of bed, starting my day, and then going on my tablet.

Honestly, a large percentage of my time on my tablet is using bluesky and youtube, but as I said, it feels much more intentional than on my phone. I don't get sucked into rabbit holes. I check on my friends, check out my subscriptions, and then move on (to be fair on the youtube side, I also use newpipe to block all recommendations, comments, etc so it's much easier for me to avoid the rabbit holes because of that too).

Another very large portion of my usage is in handwriting notes, and medium to long form reading. I don't find myself annotating PDFs, but that is not really a workflow I have sought after.

If you are really worried about using youtube and other vices, the DC-1 may not be for you. Other e-paper devices (particularly E-Ink TM devices) are going to struggle a lot more with youtube than the DC-1 does. Youtube in here is not as overstimulating and addictive, but it is still very much available and usable.