Because newcomers would then copy-paste the script without really understanding what's going on, and that lack of understanding will come back to bite when some

Because newcomers would then copy-paste the script without really understanding what's going on, and that lack of understanding will come back to bite when something breaks. Teach a man how to fish rather than giving him the fish and all that. Writing a bash script as a next step based on OP's article would be easy once you know what you are doing.