I discovered something hilarious:
https://libreboot.org/docs/linux/grub_hardening.html
I didn't discover the link. This page was written by Fedja Beader in 2017 and tweaked by myself plus others ever since, so I've known about the page for quite some time, and it's deadly serious. No, what's hilarious is this:
When I searched "linux grub hardening" just now on Google search, this is the first result. I did check Tor Browser and it was the 5th result. 1st result in DuckDuckGo on Tor.
To be clear, I'm Libreboot's founder.