The context of this thread was Linux and being able to circumvent the boot process via something like init=/bin/sh in the boot parameters. Someone pointed out that strategy doesn't really work with FDE, which was challenged as being uncommon.

I am only speaking to the prevalence of FDE among Linux users; it's not uncommon.

You're correct in that these are technical people. Most people running a GNU/Linux distro on bare-metal in their possession are at least somewhat technical, wouldn't you agree?