Today is a good day to create a secure off-site data backup. https://blog.lopp.net/how-to-securely-back-up-data-to-cloud-storage/
I think 7-zip with AES encryption is also a valid option, right? Files can be split into chunks and uploaded to any cloud. But it's manual. But very simple And I think good enough for some use cases at least. Thoughts?
How do you protect against your yubi key breaking or getting lost. It is a single point of failure and has always worried me about using gpg in this way.
You can load a GPG key into multiple yubikeys. Any decent service should allow you to add multiple 2FA yubikeys.