[1] https://old.reddit.com/r/homelab/comments/bshlr9/the_real_co...
Think of it the other way. Instead of taking work home with them to create a hobby, maybe they found some way to get paid for their hobby. Maybe this is fun for them and getting paid for it during the day is just icing on the cake.
I don't really know though. If that's true, I'm jealous of them.
Instead it is just people who buy an bunch of old enterprise gear on eBay. Though every once in a while someone posts something really cool, which is the only reason I stay subbed. Like a little while back someone figured out how to add 10Gb Ethernet to a NUC.
I have a couple of old Dell T320s that I bought for a project last year. I finished the project and powered them off because they make my office too hot. I really should think about selling them.
I am getting ready to to build a cluster out of Raspberry PI 4s as there is some cloud services that I am paying for that I want to host at home. At least those are pretty power efficient.
It's the same reason why we have cars that have hundreds of horsepower when you can't drive above 65 mph on most highways and even accelerating fast can get you a ticket for "exhibition of speed". It's for fun, and a lot of the people on homelab use it to learn for their job.