Or any other NAS appliance tbh. They're all this bad. Don't act like Synology or Asustor is better.
"Let's write our middleware in C! Nothing bad will happen!"
The reason this is super frustrating is, this shit is NOT cheap. $200 to $400 USD for a 4 bay NAS with no ability to ever expand it past that size? And the prices scale up pretty linearly with bay count.
TrueNAS. Just use TrueNAS. If you can build a gaming PC you can build a TrueNAS box.