Funny how that kind of posts is now called "DevOps", while 10 years ago it was simply called "system administration" ;-)

Besides I fail to see any DevOps tenets in it, quite the opposite: a shell script at the bottom is little in the way of reliable automation.

To me this post reads more like someone relatively new to server management wanted to share their gathered tips and tricks, i.e. me 10 years ago when I started my self-hosting journey :-D