Does this not entail taking your 12/24 words into the digital realm? something I'm keen to avoid doing.
Discussion
It's done on a laptop with a removed hard drive, read only USB running the software, and disconnected from the internet.
Fully airgapped.
Arguably more secure than a hardware device from a manufacturer.
You are correct in that doing this without proper precaution could be disastrous.
It's part of the service we provide.