+1
I never use reading mode for that reason.
Spatial separation between blocks helps helps to remember and distinguish different parts of the text.
[EDIT: I use different amount of spacing depending on relatedness]
In reading mode it’s all smashed together, looks different and I lose my spatial overview.
[EDIT 2: I found a great workaround, written up here: How to add multi line breaks in preview mode - #13 by chrsle]