Yeah the correct response is to fix the underlying cause of settings
vanishing. Not enable faux BIOS legacy boot, which literally means UEFI plus BIOS hacked on top.
As much a PITA UEFI is, adding more crap on top is asking for even more confusion.
An alternative is benevolent malware as the firmware+bootloader. E.g. https://lwn.net/Articles/748586/
Chris Murphy