For a video editor, at least one that's been around long enough to remember DAS and SAN solutions, $4300k for 40TB of edit capable storage is cheap.
Perspective is everything.
And peeps wonder why we think $4500 is cheap!
Best bet is to pick up an old HP Z620 of find someone who is upgrading their old Xeon homelab. Generally its a choice of cheap, quiet, energy efficient and you can only pick two of these options.
Someday I'll have a proper closet but right now my rack is under the kitchen and my wife complains when the servers get above about 60 dB.
I actually built my desktop as a near silent PC with the goal of it becoming my NAS when I upgrade but I didn’t understand the implications of running ZFS without ECC at the time.
So while I'd certainly sleep sounder with ECC on it, it's not a complete horror show like someone likes to portray it as.
I have had one stick give me issues over the last 10 years but that is out of probably 20 sticks.
Or is it one of those things that would be cool to have but not really necessary?