I'll bite: I think your friend has a point, I take handwritten notes purely in nested bullets if the topic isn't an active conversation.
That said, this only works up to a point, and I wonder whether most articles could be written in bullets and retain all the "value" of their prose form. Bullets don't cut it if the subject requires the author to address human emotions or impart meaning into their text. This is loosely in opposition to facts, spec sheets, and technical information that does lend itself to hierarchical structures in a way that adds value.
I recognize you might not disagree with any of this, by the way.
Many of the pieces of information we attempt to communicate have low semantic complexity and information density. They translate very nicely into an outline or a list of lists.
Other things are very difficult to convey, type systems, multiple levels of interpretation, multiple levels of VMs and runtimes, and things that are spread out over time or inter-related in complex ways.
One thing your dyslexic friend may have is a lack of context and bullet points are the fastest way to a) build context and b) provide roots to be able to hang more information off of.
That said, this only works up to a point, and I wonder whether most articles could be written in bullets and retain all the "value" of their prose form. Bullets don't cut it if the subject requires the author to address human emotions or impart meaning into their text. This is loosely in opposition to facts, spec sheets, and technical information that does lend itself to hierarchical structures in a way that adds value.
I recognize you might not disagree with any of this, by the way.