Following them like a holy-grail, no, not that useful. I usually use them to help juniors build a foundational skill about drawing graphs of architecture before

Following them like a holy-grail, no, not that useful. I usually use them to help juniors build a foundational skill about drawing graphs of architecture before implementing them, as the ground-work for discussing the proposed architecture. Also explaining to them that it doesn't have to be using the right fill/hollow arrow or whatever, more that the graphs themselves accurately describes the architecture. So in short: kinda.