I wonder if it's a good thing or a bad thing that I've never considered, even for a moment, replacing a tool like ls. My first reaction was that it's hubris to think "ls isn't good enough for me, I'll make something better." A bit more reflection has almost convinced me that it's a very good thing that people are always thinking and working on ways to improve things, even something that's taken for granted.
On a tangential note, I learned something new and thought that a few other folks might find this of interest: In the screenshots, we see a file with the name "Licence", which to my American eye looked like a typo. On further investigation I found out that "In British English, Canadian English, Irish English, Australian English, and New Zealand English the noun is spelt licence and the verb is license."[0]