It really bugs me in general how often the term “home lab” is conflated with a “home server”, but in the context of what this article is trying to communicate, it’s only going to turn the more casually technical people it’s trying to appeal to off.
For many people, their home lab can also function as a server for self hosting things that aren’t meant to be permanent, but that’s not what a home lab is or is for. A home lab is a collection of hardware for experimenting and prototyping different processes and technologies. It’s not meant to be a permanent home for services and data. If the server in your house can’t be shut down and wiped at any given time without any disruption to or loss of data that’s important to you, then you don’t have a home lab.