I'm going to answer with what is cool with a Remarkable against a paper notebook when it comes to writing : you can easily erase shapes, strokes, undo, resize, copy, paste, add pages between... To me that's a lot of advantages only for the comparison of the actual "writing tools" even not taking into account the "extras".

Disclaimer : I sold my remarkable because I had a tiny but noticeable "gap" between the stylus and the "ink" and I wasnt able to tolerate it. But I'm missing the edition features.

No password, hard to make copies, takes up more space in my bag, can't easily move things around or rework once you've put something on the page, end up with a stack of notesbooks that need disposing of, harder to file and easily look up things from a certain date or category.

They run out of pages, there's no copy function, you can't cut and paste onto the same page without making the cleared space unusable for writing.

On the upside, the paper notebook doesn't crash randomly when battery is low, and it can store (flat) physical objects.

Exactly. No subscription fees and OCR not working just as well.

I understand that botching your perfect brainstorming doodle with permanent pen gives a certain degree of anxiety. But one can treat those as drafts; you'll use up a lot of Moleskine pages before the cost breaks even with this.

I have a Rocketbook. It is an erasable plastic paper notebook. You write with some special pen, and then erase with a damp cloth. The application lets you easily scan all pages.

For the price, I find it better than both the reMarkable and a paper notebook.

For math, being able to quickly erase false starts and reorganize lemmas on the fly is surprisingly useful. Compared to paper notebooks, it's easily doubled my productivity.