So, these little fans are working well even though I can hardly feel any air movement. I have started switching this thing off at night to maybe prolong the life of these fans. IDK.
Use it as a NAS, Time Machine server and Roon endpoint to my RME DAC. (Laptop is connected to a Babyface audio interface which in turn is connected to the RME DAC via optical out. So I can quickly change the input via remote and have automatic EQ for headphones and IEMs for both inputs.) Uses restic to backup to AWS. Runs without a single issue now for over 2 years with DietPI.