I try to do it based on how difficult it is to carry. A few simple things in a single bag is not much. Spread across a few bags and drinks, that's more.
I'd still agree with his statement. Subset of people who could even make the determination in available source code is small compared to total users, now reduce that set to people competent in reverse engineering. "pretty hard" is not a bad description imo
I used to color my prompt depending on which server I was connected to (ssh), and a different color scheme for prod, dev and local. But that was a long time ago and the script is buried somewhere, also I don't stay ssh'd to nearly as many places as I did back then. But I did like it, I'd use it now if I had it.