So compared to plain bash without autocomplete and Ctrl+R it may be useful. It is probably a step back for everyone else.

I think it could be much worse than even a plain shell with ^R, as the llm will be slower than the normal history search and probably has less context than the $HISTFILE.

afaik yes, at least the arch kernel has selinux enabled, but you need to install the user space tools from the AUR.

I would consider that ifconfig is deprecated on many distros and would therefore teach about iproute2 (mostly the ip and ss commands) instead. Additionally I would consider editing files essential, even if it is with nano.

Maybe mention more modern and simpler help tools like tldr, as they could be even more useful to beginners.

To introduce the shell and utilities, I would try to find a somewhat realistic use case that combines multiple aspects, like analyzing some files or spellchecking instead of simply mentioning every feature one by one.