This is just subjective, but I use it to read many books and enjoy it. I can scribble / highlight / notetake very easily and find the whole experience quite convenient.
Oh, I was just reading reviews (probably on reddit?), and that seemed to be a consistent opinion. It looks like a really cool device, but I've heard it's a little one-dimensional.
Edit: Looks like your link to the sibling comment is for extracting annotations from pdf. Are most of the books you're reading on remarkable in pdf format instead of epub?
Edit: Looks like your link to the sibling comment is for extracting annotations from pdf. Are most of the books you're reading on remarkable in pdf format instead of epub?