Comment by samatman

I want to add an important affordance of PlantUML: accessibility.

Using visual diagrams is shutting out vision-impaired developers from ever participating in your process. Maybe you don't have any on the team now, but that could change.

PlantUML is screen-reader compatible, and it does a pretty good job of laying out the content of a diagram in a way that "reads right".

I don't think purely-visual diagrams are an appropriate part of modern development for this reason, not without a diligent effort to make an alt-text which conveys the same information. With PlantUML, you get the alt-text for free.