Does it, though?
It has a very brief introduction to Docker and Docker Compose, but then it mostly has a lot of FUD that's designed to scare people off of Docker Compose but is not remotely convincing to someone who's actually worked with it. The way they frame that pihole example ("Whew! That’s a lot of stuff!") is just silly.
Looking at their website, I think they started out trying to make self-hosting really easy for a barely-technical user [0], which accounts for their attitude towards docker-compose, but it also means that the post was pretty devoid of useful information for someone who actually wants to self-host with the tech that's already ubiquitous today.