Afaict, you can't disable driver signature enforcement permanently without disabling secure boot.

You also get a huge watermark that says "Test Mode" that takes up the entire screen (not kidding)

Three lines of text in 12-point font in the corner which can be covered by a window is hardly “the entire screen.”

They changed it recently.

https://learn-attachment.microsoft.com/api/attachments/f8eac...

Not the OP you responded too, but what the hell! I have not really used windows in a while but that's absurd. That text is massive just for an unsigned driver.

Secure boot is an anti-feature in most of the landscape anyway. Sure, if you have a distribution under your control or influence it could theoretically be a benefit. But you need to not be stupid or naive here.

You can also roll you own encryption if you are not stupid and naive. Probably a question of self-reflection.