I guess I'm a lucky 58-yr-old. With my glasses, on a high res monitor at the back of my desk, I can read everything fine.
For me, the issue is that the drop targets are too small and finicky. If I want to drag a note to a new notebook, or drag it to a tag, I have to slow way down and very carefully place it. I would like to make the font bigger to allow more slop in my motions. Same thing dragging tags the other direction.
Even better for my use case, I'd like an easy way to temporarily make either the left panel or the notes list larger. Increase the size, drag a bunch of stuff, shrink it back.