https://discuss.privacyguides.net/t/grapheneos-emergency-pin/32356
note: by emergency PIN, the user means Duress PIN.
This post reminded me that most non-technical users that don't keep up with GrapheneOS's social accounts miss some technical details of new features added and can accidentally try a new feature that appeared after update just to "try it and see what it adds/does".
The description in the GrapheneOS's setting is not clear compared to the website.
"Submitting the duress password will immediately make the storage contents permanently inaccessible, delete all eSIMs and then power off the device. GrapheneOS will remain installed."
Website description:
https://grapheneos.org/features#duress
"will irreversibly wipe the device" is very common and will make sense to almost everyone regardless of their technical background than "storage contents permanently inaccessible".
My suggestion is:
Submitting the duress password will irreversibly wipe the device and make the storage contents permanently inaccessible, delete all eSIMs and then power off the device. GrapheneOS will remain installed.
Which will give slight warning about the "wipe" and content being "inaccessible" forensically (data can't be restored by forensic means).