Yep. This is why I am using local AI to edit and build my own copies of Linux kernel, Wayland... everything a distribution would ship really.

Not so daunting for me having come of age when compiling a kernel specific to a hardware platform was essential.

Custom software that does not fit the usual patterns is not fool proof but it won't be obvious.

Monocultures with all their eggs in one basket are even less secure than truly diverse ecosystems though.