Blueprints allow for functions and Macros where you can encapsulate a lot of logic in a single graphical node, as well as grouping/labeling, so no, clean Blueprints don't look like that at all.

Screenshots can't make it justice anyway, because one of the main benefits of using Blueprints is to watch the logic and events flow in real time as you play/debug the game (represented as tiny marching circles)

Here is an interesting talk in this matter of organizing blueprints (52 min): https://www.youtube.com/watch?v=mW0IlgjF-iw