That happens to me too.
I don’t like them presenting material on the basis of what I’ve watched. I know what I’m interested in, and I can look it up. I want Roku to surprise me with new stuff I wouldn’t have thought of. That doesn’t happen so much anymore.
I would LOVE it if my Roku “previously viewed” was in a menu. Obviously they know it’s me, even though they don’t know who “me” is.