Interestingly, as someone with aphantasia they're absolutely critical for me - because I'm not able to visualise the relationships without a diagram in from of me to "see" (This was the same for me with more abstract undergraduate maths, too). Given just the bullet points I find it hard to conceptualise the relationships between them without quickly forgetting the points I'm not directly loooking at.
I echo your point that diagrams are not the solution for everyone (and that a multimodal representation of relationships is clearly best), I just find it fascinating how even with something as specific as aphantasia, there is still so much variability as to how it's experienced.
I echo your point that diagrams are not the solution for everyone (and that a multimodal representation of relationships is clearly best), I just find it fascinating how even with something as specific as aphantasia, there is still so much variability as to how it's experienced.