As someone who uses PKM tools I'll say the answer is probably that you _do not_ use the graph view. It makes for nice screenshots.
That being said, part of what makes PKM tools so useful is that they can be used be different people with different workflows, so perhaps other people are using the graph view effectively.
That being said, part of what makes PKM tools so useful is that they can be used be different people with different workflows, so perhaps other people are using the graph view effectively.