I don't know the specifics, but seems very reasonable if implemented matches the promise. If it's required also for some non porn sites (social media? gambling maybe), there should be no stigma attached either.
I don't often do very complex software plans like that. My working notes are often on a smaller scale like individual features or so. If we need to document the full architecture for the project, I'm happy to do that with digital tools.
But while I'm planning parts of it or designing it, I do better with pen and paper. My main issue with many of the digital tools I've tried comes down to the added friction if I need to switch to a different tool in the app when I switch between circles and rectangles and text and the fact that I find free-hand drawing with mouse really difficult.
> OTOH if the plan is very simple and obvious, and can be drawn out in one go, it doesn't really need a diagram in the first place, so I skip spending time drawing the obvious stuff.
I think there's a middle ground where it might be easy to draw on one go but deciding what to draw and how things work together and what's needed requires iterations and for that, thinking through drawing and writing helps me a ton.
OTOH if the plan is very simple and obvious, and can be drawn out in one go, it doesn't really need a diagram in the first place, so I skip spending time drawing the obvious stuff.