I don't normally have to deal with GRUB in my regular Linux usage apart from the boot menu. Since everything's set up correctly on installation, I can just let it be.

Pressing the backspace key 28 times can bypass the Grub2 bootloader's password protection and allow a hacker to install malware on a locked-down Linux system.

Bootloader gap: Many Linux distributions are at risk There is a security gap in the bootloader shim, which also allows secure booting for non-Windows operating systems.