Beginner here (to Linux and networking anyways), running Unraid for about 18 months now. Fully agree, it's been great for actually getting up and doing useful things quickly and relatively pain free.
Eventually I would like to try working backwards and getting things running on a more "traditional" server environment, but Unraid has been a great learning tool for me personally.
It's like... Maybe some folks learned to overhaul an engine before they got their driver's license, but lots of people just need to a car to get to work and back today, and they can learn to change their oil and do a brake job when the time comes.
I lived a few blocks in from the center-right edge of this photo when it hit.
It was really wild to look down these streets that used to be lined with huge shady boulevard trees, and just see clear sky down for 1/2 mile straight.