Cool, but nothing a single compute machine wouldn't get done with a bunch of VM's if learning and home workload are the focus.
This thing probably idles at a couple hundred watts.
It should be obvious to the reader that this is very much overkill, even for the stated goals of expandability and learning.
Incidentally, this setup does leave me some significant headroom in terms of compute resources, but that's by design.
If it's inference, don't expect great performance or cost-effectiveness.
But if you learn a lot during it, I wish you all the best!
If the goal is to have a lot of something so you can play with many different things, this gets the job done. If the goal is high performance and maximum efficiency for learning or compute, a setup with dozens of smaller computers like this is usually not the optimal choice.